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Heat Related Illness

Heat Related Illness Summary Tables

Table 1. Heat-related hospitalizations by county, 2000-2020

County Age-adjusted rate (per 100,000) Lower 95% Limit Upper 95% Limit Number of cases
California 1.66 1.63 1.68 13042
Alameda 1.34 1.21 1.47 429
Amador 2.87 1.86 4.27 29
Butte 4.55 3.96 5.21 229
Calaveras 1.16 0.65 1.97 17
Colusa 2.95 1.56 5.06 13
Contra Costa 1.43 1.28 1.59 333
El Dorado 1.46 1.1 1.9 60
Fresno 3.07 2.81 3.34 544
Glenn 3 1.76 4.76 18
Humboldt 0.53 0.29 0.88 15
Imperial 14.18 12.92 15.51 478
Kern 3.17 2.89 3.47 491
Kings 4.15 3.38 5.03 106
Lake 2.41 1.68 3.36 40
Lassen 2.82 1.7 4.42 20
Los Angeles 1.36 1.31 1.41 2759
Madera 2.92 2.34 3.61 87
Marin 0.84 0.62 1.1 55
Mendocino 1.76 1.24 2.43 39
Merced 2.94 2.47 3.49 136
Monterey 0.73 0.56 0.94 63
Napa 1.37 0.99 1.84 46
Nevada 1.54 1.09 2.13 43
Orange 0.88 0.81 0.95 566
Placer 1.08 0.86 1.33 89
Riverside 3.31 3.14 3.48 1461
Sacramento 1.59 1.45 1.74 481
San Benito 1.88 1.16 2.89 21
San Bernardino 2.86 2.68 3.03 1082
San Diego 1.05 0.97 1.13 691
San Francisco 1.21 1.06 1.37 246
San Joaquin 1.92 1.69 2.17 259
San Luis Obispo 0.88 0.67 1.14 62
San Mateo 1.16 1 1.33 201
Santa Barbara 0.71 0.55 0.9 68
Santa Clara 1.18 1.07 1.3 437
Santa Cruz 0.75 0.54 1.02 42
Shasta 3.29 2.75 3.9 143
Solano 1.06 0.85 1.3 94
Sonoma 1.21 1.02 1.43 147
Stanislaus 2.35 2.06 2.66 240
Sutter 2.75 2.07 3.59 55
Tehama 3.72 2.77 4.88 55
Tulare 2.93 2.57 3.33 235
Tuolumne 2.49 1.66 3.58 34
Ventura 0.84 0.71 0.98 148
Yolo 1.35 0.99 1.78 50
Yuba 3.04 2.18 4.12 42

Table 2. Heat-related hospitalizations by race/ethnicity and county, 2000-2020

County Race/ethnicity Age-adjusted rate (per 100,000) Lower 95% Limit Upper 95% Limit Number of cases
California Black, Non-Hispanic 2.53 2.39 2.69 1134
Asian/Pacific Islander, Non-Hispanic 0.83 0.77 0.89 819
Hispanic/Latino 1.62 1.55 1.68 3230
Other 4.1 3.76 4.47 586
White,Non-Hispanic 1.77 1.73 1.81 7273
Alameda Black, Non-Hispanic 2.5 2.03 3.04 101
Asian/Pacific Islander, Non-Hispanic 0.82 0.62 1.05 61
Hispanic/Latino 1.11 0.78 1.51 44
Other 3.14 1.84 4.92 21
White,Non-Hispanic 1.38 1.19 1.59 202
Amador White,Non-Hispanic 2.77 1.67 4.39 25
Butte Hispanic/Latino 2.84 1.55 4.8 15
Other 7.01 3.42 12.6 12
White,Non-Hispanic 4.65 3.98 5.39 196
Calaveras White,Non-Hispanic 1.13 0.61 2.02 15
Contra Costa Black, Non-Hispanic 2.27 1.63 3.09 42
Asian/Pacific Islander, Non-Hispanic 1.26 0.88 1.75 36
Hispanic/Latino 1.21 0.82 1.71 36
Other 4.1 2.27 6.67 17
White,Non-Hispanic 1.38 1.19 1.6 202
El Dorado White,Non-Hispanic 1.41 1.03 1.89 51
Fresno Black, Non-Hispanic 5.76 4.15 7.77 45
Asian/Pacific Islander, Non-Hispanic 1.49 0.91 2.28 21
Hispanic/Latino 3.18 2.74 3.67 215
White,Non-Hispanic 3.15 2.76 3.58 258
Glenn White,Non-Hispanic 2.82 1.39 5.16 12
Humboldt White,Non-Hispanic 0.57 0.3 1 13
Imperial Black, Non-Hispanic 30.24 19.03 45.75 27
Hispanic/Latino 11.63 10.3 13.08 287
Other 25.93 13.63 44.58 13
White,Non-Hispanic 21.35 17.88 25.33 150
Kern Black, Non-Hispanic 7.98 5.99 10.4 60
Hispanic/Latino 2.9 2.4 3.46 154
Other 4.08 2.05 7.16 13
White,Non-Hispanic 3.27 2.87 3.71 257
Kings Hispanic/Latino 5.16 3.67 7.02 47
White,Non-Hispanic 3.49 2.54 4.69 45
Lake White,Non-Hispanic 2.8 1.87 4.04 36
Lassen White,Non-Hispanic 3.48 1.98 5.66 16
Los Angeles Black, Non-Hispanic 1.82 1.63 2.03 333
Asian/Pacific Islander, Non-Hispanic 0.74 0.65 0.85 226
Hispanic/Latino 1.22 1.13 1.31 816
Other 5.87 4.99 6.85 169
White,Non-Hispanic 1.55 1.46 1.65 1215
Madera Hispanic/Latino 3.49 2.44 4.84 43
White,Non-Hispanic 2.32 1.6 3.28 38
Marin White,Non-Hispanic 0.96 0.68 1.31 50
Mendocino White,Non-Hispanic 2.06 1.41 2.94 36
Merced Hispanic/Latino 2.66 1.91 3.6 49
White,Non-Hispanic 3.34 2.59 4.24 73
Monterey Hispanic/Latino 0.55 0.33 0.88 23
White,Non-Hispanic 0.88 0.58 1.3 31
Napa White,Non-Hispanic 1.24 0.83 1.82 34
Nevada White,Non-Hispanic 1.49 1.03 2.12 39
Orange Black, Non-Hispanic 1.35 0.69 2.39 13
Asian/Pacific Islander, Non-Hispanic 0.75 0.59 0.94 77
Hispanic/Latino 0.79 0.63 0.97 110
Other 1.62 0.88 2.68 16
White,Non-Hispanic 1 0.89 1.11 350
Placer White,Non-Hispanic 1.1 0.85 1.4 74
Riverside Black, Non-Hispanic 4.51 3.68 5.47 110
Asian/Pacific Islander, Non-Hispanic 1.48 1.02 2.07 35
Hispanic/Latino 2.86 2.55 3.19 396
Other 7.05 5.19 9.32 55
White,Non-Hispanic 3.63 3.37 3.89 865
Sacramento Black, Non-Hispanic 3.03 2.38 3.8 80
Asian/Pacific Islander, Non-Hispanic 0.68 0.44 0.99 27
Hispanic/Latino 1.62 1.23 2.1 69
Other 3.56 2.1 5.53 21
White,Non-Hispanic 1.56 1.38 1.76 284
San Benito White,Non-Hispanic 2.62 1.4 4.51 14
San Bernardino Black, Non-Hispanic 3.76 3.05 4.58 109
Asian/Pacific Islander, Non-Hispanic 1.25 0.83 1.81 29
Hispanic/Latino 1.91 1.66 2.19 257
Other 6.03 4.21 8.33 41
White,Non-Hispanic 3.63 3.35 3.93 646
San Diego Black, Non-Hispanic 1.42 1.02 1.92 44
Asian/Pacific Islander, Non-Hispanic 0.65 0.46 0.88 42
Hispanic/Latino 1.07 0.9 1.26 164
Other 3.39 2.4 4.64 46
White,Non-Hispanic 1.03 0.93 1.14 395
San Francisco Black, Non-Hispanic 1.88 1.24 2.79 27
Asian/Pacific Islander, Non-Hispanic 0.98 0.77 1.24 80
Hispanic/Latino 1.32 0.87 1.91 28
Other 5.68 3.15 9.24 16
White,Non-Hispanic 1.11 0.9 1.38 95
San Joaquin Black, Non-Hispanic 3.79 2.53 5.41 31
Asian/Pacific Islander, Non-Hispanic 1 0.58 1.6 17
Hispanic/Latino 1.81 1.36 2.34 67
White,Non-Hispanic 2.01 1.67 2.4 133
San Luis Obispo White,Non-Hispanic 0.94 0.69 1.26 54
Black, Non-Hispanic 2.24 1.15 4.01 12
San Mateo Asian/Pacific Islander, Non-Hispanic 0.77 0.51 1.12 27
Hispanic/Latino 1.09 0.69 1.62 25
White,Non-Hispanic 1.24 1.02 1.49 130
Santa Barbara Hispanic/Latino 0.46 0.25 0.78 15
White,Non-Hispanic 0.88 0.63 1.2 50
Santa Clara Asian/Pacific Islander, Non-Hispanic 0.74 0.58 0.93 73
Hispanic/Latino 1.19 0.91 1.51 74
Other 5.32 3.43 7.76 28
White,Non-Hispanic 1.35 1.19 1.54 251
Santa Cruz White,Non-Hispanic 0.78 0.52 1.14 31
Shasta White,Non-Hispanic 3.38 2.79 4.06 129
Solano Black, Non-Hispanic 1.72 1.01 2.71 19
White,Non-Hispanic 1.16 0.86 1.54 53
Sonoma Hispanic/Latino 1.15 0.59 1.97 17
White,Non-Hispanic 1.23 1.01 1.48 122
Black, Non-Hispanic 4.77 2.45 8.46 12
Stanislaus Hispanic/Latino 1.87 1.34 2.52 50
White,Non-Hispanic 2.62 2.22 3.06 165
Sutter White,Non-Hispanic 2.85 1.94 4.04 34
Tehama White,Non-Hispanic 4.04 2.91 5.47 48
Tulare Hispanic/Latino 2.71 2.12 3.41 89
Other 10.47 5.95 17 17
White,Non-Hispanic 3.17 2.6 3.82 120
Tuolumne White,Non-Hispanic 2.25 1.39 3.46 26
Ventura Hispanic/Latino 0.68 0.45 0.98 32
White,Non-Hispanic 0.86 0.69 1.07 93
Yolo Hispanic/Latino 1.36 0.66 2.44 12
White,Non-Hispanic 1.24 0.84 1.79 31
Yuba White,Non-Hispanic 3.99 2.8 5.51 38

Table 3. Heat-related hospitalizations by gender and county, 2000-2020

County Gender Age-adjusted rate (per 100,000) Lower 95% Limit Upper 95% Limit Number of cases
California female 0.99 0.96 1.02 4288
male 2.38 2.33 2.44 8754
Alameda female 1.13 0.98 1.3 206
male 1.57 1.37 1.79 223
Amador male 4.13 2.47 6.51 20
Butte female 2.21 1.68 2.88 63
male 7.08 6.02 8.28 166
Contra Costa female 1 0.83 1.19 134
male 1.93 1.67 2.22 199
El Dorado female 0.68 0.38 1.13 16
male 2.34 1.68 3.17 44
Fresno female 1.49 1.25 1.76 140
male 4.78 4.32 5.28 404
Imperial female 5.32 4.27 6.55 90
male 23.29 21 25.76 388
Kern female 1.7 1.42 2.02 132
male 4.62 4.14 5.14 359
Kings female 3.03 2.14 4.16 38
male 5.17 3.94 6.64 68
Lake male 4.2 2.82 6.04 33
Lassen male 3.03 1.6 5.3 15
Los Angeles female 0.87 0.82 0.93 981
male 1.93 1.84 2.03 1778
Madera female 1.66 1.08 2.44 26
male 4.37 3.33 5.63 61
Marin female 0.57 0.33 0.92 20
male 1.2 0.83 1.69 35
Mendocino female 1.06 0.56 1.88 13
male 2.49 1.61 3.7 26
Merced female 1.33 0.91 1.87 32
male 4.82 3.91 5.86 104
Monterey female 0.41 0.24 0.64 19
male 1.05 0.76 1.41 44
Napa male 2.38 1.66 3.31 36
Nevada female 1.14 0.65 1.9 19
male 1.88 1.17 2.89 24
Orange female 0.57 0.49 0.66 200
male 1.22 1.09 1.35 366
Placer female 0.54 0.34 0.8 26
male 1.67 1.28 2.15 63
Riverside female 1.75 1.59 1.93 417
male 4.95 4.65 5.26 1044
Sacramento female 0.89 0.75 1.05 148
male 2.4 2.15 2.68 333
San Benito male 3.21 1.84 5.2 17
San Bernardino female 1.71 1.53 1.91 341
male 4.14 3.83 4.46 741
San Diego female 0.63 0.55 0.72 221
male 1.49 1.36 1.63 470
San Francisco female 1.02 0.84 1.23 120
male 1.39 1.15 1.66 126
San Joaquin female 1.05 0.83 1.31 77
male 2.92 2.51 3.39 182
San Luis Obispo female 0.55 0.34 0.85 23
male 1.23 0.87 1.69 39
San Mateo female 0.84 0.67 1.04 88
male 1.55 1.28 1.87 113
Santa Barbara female 0.43 0.26 0.66 21
male 1.04 0.76 1.39 47
Santa Clara female 0.95 0.82 1.09 196
male 1.42 1.25 1.62 241
Santa Cruz male 1.25 0.84 1.78 32
Shasta female 1.8 1.31 2.44 47
male 4.88 3.93 6.01 96
Solano female 0.76 0.53 1.06 36
male 1.41 1.06 1.83 58
Sonoma female 0.81 0.61 1.07 59
male 1.65 1.32 2.04 88
Stanislaus female 1.35 1.07 1.69 77
male 3.45 2.93 4.03 163
Sutter female 1.13 0.58 1.99 12
male 4.6 3.32 6.22 43
Tehama female 2.24 1.32 3.59 19
male 5.25 3.64 7.33 36
Tulare female 1.37 1.04 1.77 59
male 4.59 3.92 5.33 176
Tuolumne male 3.52 2.22 5.33 25
Ventura female 0.54 0.4 0.71 52
male 1.17 0.94 1.43 96
Yolo female 0.58 0.3 1.02 12
male 2.17 1.52 3 38
Yuba female 1.8 0.93 3.14 12
male 4.32 2.88 6.22 30

Table 4. Heat-related hospitalizations by age group and county, 2000-2020

County Ages Age-adjusted rate (per 100,000) Lower 95% Limit Upper 95% Limit Number of cases
California <5 0.25 0.21 0.3 132
5-17 0.25 0.22 0.28 358
18-34 0.79 0.75 0.83 1514
35-64 1.67 1.62 1.71 5240
65+ 6.08 5.93 6.24 5798
Alameda 18-34 0.36 0.24 0.52 29
35-64 0.94 0.79 1.12 129
65+ 6.7 5.91 7.58 258
Amador 65+ 10.04 5.84 16.1 17
Butte 18-34 2.41 1.56 3.54 27
35-64 6.11 4.95 7.45 103
65+ 12.06 9.73 14.78 94
Contra Costa 18-34 0.58 0.38 0.85 27
35-64 1.2 0.99 1.45 115
65+ 6.25 5.37 7.23 182
El Dorado 35-64 1.72 1.11 2.54 27
65+ 4.7 3.08 6.85 27
<5 0.75 0.39 1.31 12
Fresno 5-17 0.55 0.35 0.82 23
18-34 1.1 0.82 1.44 54
35-64 3.74 3.29 4.23 257
65+ 9.64 8.34 11.09 198
Imperial 18-34 9.48 7.56 11.75 84
35-64 19.39 17.05 21.96 251
65+ 34.27 28.72 40.57 135
Kern 5-17 0.32 0.17 0.56 12
18-34 1.83 1.45 2.28 79
35-64 3.96 3.48 4.49 245
65+ 9.07 7.67 10.65 151
Kings 18-34 1.57 0.86 2.65 14
35-64 4.15 3.03 5.56 45
65+ 16.81 12.23 22.55 45
Lake 35-64 2.74 1.55 4.5 18
65+ 6.22 3.54 10.14 16
Los Angeles <5 0.21 0.14 0.31 30
5-17 0.22 0.18 0.27 84
18-34 0.51 0.45 0.58 273
35-64 1.17 1.1 1.25 977
65+ 5.81 5.5 6.12 1395
Madera 18-34 2.28 1.33 3.65 17
35-64 3.57 2.56 4.86 41
65+ 7.6 5 11.06 27
Marin 35-64 0.59 0.31 1 14
65+ 3.82 2.66 5.3 36
Mendocino 35-64 1.59 0.84 2.75 14
65+ 7.63 4.75 11.57 22
18-34 1.1 0.61 1.81 15
Merced 35-64 3.44 2.64 4.41 63
65+ 10.45 7.86 13.62 55
Monterey 18-34 0.55 0.29 0.95 13
35-64 0.66 0.4 1 21
65+ 2.28 1.44 3.43 23
Napa 65+ 6.18 4.15 8.85 30
Nevada 65+ 6.61 4.38 9.58 28
Orange 5-17 0.21 0.13 0.31 24
18-34 0.49 0.38 0.61 75
35-64 0.79 0.68 0.9 207
65+ 3.24 2.85 3.67 252
Placer 35-64 0.96 0.63 1.39 29
65+ 4.09 3.01 5.43 48
Riverside <5 0.57 0.34 0.89 18
5-17 0.42 0.3 0.58 39
18-34 1.86 1.61 2.15 191
35-64 3.86 3.57 4.17 647
65+ 10.07 9.26 10.94 566
Sacramento 5-17 0.22 0.11 0.38 12
18-34 0.8 0.61 1.03 58
35-64 1.92 1.68 2.19 232
65+ 4.91 4.21 5.69 177
San Bernardino 5-17 0.42 0.3 0.58 39
18-34 1.18 0.98 1.41 124
35-64 3.23 2.96 3.53 519
65+ 9.84 8.88 10.87 393
San Diego 5-17 0.23 0.15 0.34 26
18-34 0.72 0.6 0.86 122
35-64 1.13 1 1.27 286
65+ 3.12 2.75 3.54 250
San Francisco 18-34 0.32 0.19 0.53 17
35-64 0.71 0.54 0.93 54
65+ 6.6 5.65 7.67 173
San Joaquin 18-34 0.88 0.59 1.26 30
35-64 1.99 1.62 2.41 106
65+ 6.7 5.48 8.11 106
San Luis Obispo 35-64 0.84 0.5 1.32 20
65+ 3.82 2.68 5.28 37
San Mateo 35-64 0.63 0.46 0.85 45
65+ 6.5 5.47 7.67 143
Santa Barbara 35-64 0.73 0.47 1.07 26
65+ 1.95 1.27 2.87 26
Santa Clara 18-34 0.35 0.24 0.49 32
35-64 0.77 0.64 0.92 122
65+ 6.11 5.41 6.89 271
Santa Cruz 35-64 0.72 0.42 1.16 18
65+ 2.65 1.53 4.26 17
Shasta 18-34 1.97 1.08 3.3 14
35-64 4.07 3.1 5.25 65
65+ 9.5 7.28 12.19 62
Solano 18-34 0.63 0.34 1.08 13
35-64 0.89 0.61 1.25 34
65+ 4.25 3.08 5.71 44
Sonoma 18-34 0.55 0.28 0.96 12
35-64 0.99 0.72 1.32 48
65+ 5.14 4.08 6.39 82
Stanislaus 18-34 1.07 0.71 1.55 28
35-64 2.47 2.01 3.01 100
65+ 8.47 6.91 10.29 103
Sutter 35-64 2.8 1.72 4.31 21
65+ 10 6.52 14.68 26
Tehama 35-64 4.45 2.8 6.73 24
65+ 11.5 7.43 17.01 25
Tulare 18-34 1.26 0.84 1.83 28
35-64 3.53 2.9 4.26 110
65+ 9.5 7.62 11.72 88
Tuolumne 35-64 3.62 2.04 5.92 18
Ventura 18-34 0.38 0.21 0.62 15
35-64 0.9 0.69 1.16 63
65+ 3 2.32 3.82 66
Yolo 35-64 1.8 1.17 2.65 26
65+ 4.64 2.83 7.17 20
Yuba 35-64 3.15 1.85 5.02 18
65+ 10.48 5.96 17.03 16

Table 5. Heat-related emergency department visits by county, 2005-2020

County Age-adjusted rate (per 100,000) Lower 95% Limit Upper 95% Limit Number of cases
California 12.52 12.43 12.61 77259
Alameda 7.38 7.04 7.72 1867
Amador 33.71 28.88 39.09 206
Butte 26.91 25.17 28.72 975
Calaveras 30.99 26.52 35.95 207
Colusa 36.16 29.96 43.25 123
Contra Costa 11.26 10.76 11.77 1986
Del Norte 7.91 5.51 11 36
El Dorado 18.05 16.47 19.73 531
Fresno 23 22.23 23.8 3437
Glenn 31.68 26.57 37.46 140
Humboldt 7.21 6.1 8.47 158
Imperial 85.29 81.85 88.83 2368
Inyo 16.95 12.41 22.58 52
Kern 28.08 27.17 29 3757
Kings 30.29 28.07 32.63 721
Lake 29.15 25.77 32.84 303
Lassen 20.23 16.57 24.47 112
Los Angeles 8.18 8.04 8.33 13178
Madera 29.04 26.9 31.3 697
Marin 6.39 5.61 7.24 271
Mariposa 32.43 25.55 40.54 91
Mendocino 28.01 25.23 31.01 394
Merced 24.61 23.08 26.22 991
Modoc 37.72 27.92 49.75 56
Monterey 7.37 6.74 8.05 504
Napa 13.39 11.89 15.02 304
Nevada 16.44 14.38 18.71 266
Orange 6.36 6.14 6.59 3187
Placer 17.48 16.4 18.61 1020
Plumas 35.36 28.36 43.5 108
Riverside 24.28 23.77 24.8 8685
Sacramento 15.62 15.11 16.14 3673
San Benito 11.54 9.42 14 105
San Bernardino 19.34 18.86 19.83 6321
San Diego 7.84 7.6 8.09 4030
San Francisco 4.67 4.31 5.04 702
San Joaquin 18.01 17.22 18.82 2012
San Luis Obispo 11.14 10.15 12.2 512
San Mateo 5.34 4.94 5.77 674
Santa Barbara 6.66 6.06 7.3 480
Santa Clara 6.12 5.84 6.42 1808
Santa Cruz 6.38 5.63 7.21 274
Shasta 36.36 34.09 38.74 1027
Siskiyou 29.88 25.65 34.6 196
Solano 13.77 12.89 14.69 941
Sonoma 11.8 11.05 12.58 977
Stanislaus 23.45 22.41 24.52 1953
Sutter 19.76 17.57 22.15 301
Tehama 46.14 41.96 50.61 475
Trinity 34.91 26.81 44.63 74
Tulare 24.76 23.59 25.99 1706
Tuolumne 29.96 26.15 34.14 249
Ventura 7.84 7.37 8.33 1060
Yolo 20.67 19.08 22.36 663
Yuba 26.35 23.43 29.54 303

Table 6. Heat-related emergency department visits by race/ethnicity and county, 2005-2020

County Race/ethnicity Age-adjusted rate (per 100,000) Lower 95% Limit Upper 95% Limit Number of cases
California Black, Non-Hispanic 17.77 17.33 18.21 6451
Asian/Pacific Islander, Non-Hispanic 3.56 3.43 3.69 2893
Hispanic/Latino 11.61 11.46 11.77 24875
Other 33.39 32.4 34.4 5006
White,Non-Hispanic 14.82 14.67 14.98 38034
Alameda Black, Non-Hispanic 11.97 10.77 13.26 375
Asian/Pacific Islander, Non-Hispanic 3.35 2.92 3.83 220
Hispanic/Latino 5.86 5.13 6.66 285
Other 19.45 16.18 23.18 157
White,Non-Hispanic 9.05 8.41 9.73 830
Amador Hispanic/Latino 27.73 17.31 42.56 23
White,Non-Hispanic 35.23 29.41 41.82 169
Butte Black, Non-Hispanic 54.64 35.18 80.98 27
Hispanic/Latino 11.96 9.12 15.49 67
Other 29.28 21.1 39.59 49
White,Non-Hispanic 30.43 28.26 32.72 824
Calaveras Hispanic/Latino 30.75 18.65 47.56 21
White,Non-Hispanic 31.71 26.65 37.41 172
Colusa Hispanic/Latino 34.91 26.1 45.86 62
White,Non-Hispanic 38.31 28.17 50.85 57
Contra Costa Black, Non-Hispanic 20.41 18.16 22.85 311
Asian/Pacific Islander, Non-Hispanic 4.7 3.86 5.67 112
Hispanic/Latino 8.78 7.78 9.87 332
Other 31.46 26.18 37.44 160
White,Non-Hispanic 11.94 11.18 12.73 1071
Del Norte White,Non-Hispanic 11.18 7.41 16.14 30
El Dorado Hispanic/Latino 14.38 10.49 19.3 49
Other 60.44 43.96 80.82 52
White,Non-Hispanic 17.77 15.99 19.7 416
Fresno Black, Non-Hispanic 28.06 24.19 32.38 200
Asian/Pacific Islander, Non-Hispanic 4.97 3.8 6.37 65
Hispanic/Latino 25.68 24.43 26.98 1816
Other 29.09 23.3 35.88 98
White,Non-Hispanic 25.04 23.61 26.53 1258
Glenn Hispanic/Latino 24.73 17.39 34.41 40
White,Non-Hispanic 36.39 28.76 45.34 86
Humboldt Other 11.6 7.16 17.83 23
White,Non-Hispanic 7.33 6.04 8.8 124
Imperial Black, Non-Hispanic 86.79 65.71 112.89 72
Hispanic/Latino 79.93 76.14 83.85 1735
Other 148.7 112.42 192.74 58
White,Non-Hispanic 116.8 106.09 128.29 496
Inyo White,Non-Hispanic 17.6 11.68 25.42 37
Kern Black, Non-Hispanic 51.38 45.9 57.34 356
Asian/Pacific Islander, Non-Hispanic 8.6 6.22 11.58 44
Hispanic/Latino 24.99 23.63 26.41 1558
Other 52.84 44.53 62.22 164
White,Non-Hispanic 29.96 28.48 31.5 1635
Kings Black, Non-Hispanic 38.03 27.19 51.69 54
Hispanic/Latino 32.3 28.73 36.21 358
Other 37.87 24.05 58.14 27
White,Non-Hispanic 31.52 27.87 35.51 278
Lake Hispanic/Latino 26.59 18.6 36.86 41
Other 24.62 12.34 43.45 12
White,Non-Hispanic 31.23 27.02 35.9 238
Lassen Hispanic/Latino 12.22 5.56 25.16 13
White,Non-Hispanic 25.33 20.16 31.41 85
Los Angeles Black, Non-Hispanic 11.31 10.75 11.89 1551
Asian/Pacific Islander, Non-Hispanic 3.13 2.9 3.38 718
Hispanic/Latino 7.05 6.84 7.26 5033
Other 35.37 33.13 37.71 1020
White,Non-Hispanic 10.33 10.02 10.64 4856
Madera Black, Non-Hispanic 30.63 19.94 45.39 27
Hispanic/Latino 32.59 29.18 36.29 399
Other 29.29 17.4 46.12 19
White,Non-Hispanic 27.42 23.89 31.31 250
Marin Hispanic/Latino 3.48 2.05 5.59 21
Other 15.08 7.83 26.11 14
White,Non-Hispanic 7.25 6.21 8.41 220
Mariposa White,Non-Hispanic 32.62 24.95 41.83 77
Mendocino Hispanic/Latino 17.15 11.89 23.95 46
Other 43.08 30.19 59.52 38
White,Non-Hispanic 31.99 28.19 36.15 298
Merced Black, Non-Hispanic 38.75 28.93 50.79 53
Hispanic/Latino 24.42 22.12 26.91 493
Other 32.41 20.82 48.11 26
White,Non-Hispanic 28.88 26.05 31.93 409
Modoc White,Non-Hispanic 35.35 24.55 49.16 43
Monterey Black, Non-Hispanic 6.23 3.28 10.96 13
Asian/Pacific Islander, Non-Hispanic 3.55 2 5.84 16
Hispanic/Latino 6.85 6.01 7.79 268
Other 17.1 10.86 25.58 26
White,Non-Hispanic 8.24 6.99 9.64 181
Napa Hispanic/Latino 10.49 8.05 13.48 75
White,Non-Hispanic 16.33 13.98 18.94 211
Nevada White,Non-Hispanic 18.19 15.79 20.86 251
Orange Black, Non-Hispanic 11.51 9.1 14.37 84
Asian/Pacific Islander, Non-Hispanic 2.83 2.48 3.21 243
Hispanic/Latino 4.93 4.55 5.34 747
Other 20.76 17.86 23.99 216
White,Non-Hispanic 8.45 8.06 8.86 1897
Placer Black, Non-Hispanic 28.97 17.74 44.86 21
Asian/Pacific Islander, Non-Hispanic 7.57 4.96 11.07 27
Hispanic/Latino 14.36 11.69 17.47 108
Other 19.63 13.12 28.19 33
White,Non-Hispanic 18.98 17.66 20.38 831
Plumas White,Non-Hispanic 40.3 31.88 50.16 101
Riverside Black, Non-Hispanic 32.68 30.26 35.25 709
Asian/Pacific Islander, Non-Hispanic 5.15 4.22 6.21 113
Hispanic/Latino 22.5 21.68 23.34 3322
Other 72.63 66.35 79.34 570
White,Non-Hispanic 26.23 25.37 27.12 3971
Sacramento Black, Non-Hispanic 25.79 23.7 28.02 592
Asian/Pacific Islander, Non-Hispanic 5.26 4.52 6.09 182
Hispanic/Latino 14.15 13.01 15.36 658
Other 26.86 23.07 31.08 233
White,Non-Hispanic 16.9 16.14 17.68 2008
San Benito Hispanic/Latino 9.54 6.98 12.78 49
White,Non-Hispanic 15.04 10.9 20.19 48
San Bernardino Black, Non-Hispanic 27.29 25.32 29.39 758
Asian/Pacific Islander, Non-Hispanic 5.06 4.11 6.15 104
Hispanic/Latino 14.03 13.37 14.7 2078
Other 65.96 59.69 72.71 469
White,Non-Hispanic 24.72 23.8 25.67 2912
San Diego Black, Non-Hispanic 11.23 9.91 12.68 275
Asian/Pacific Islander, Non-Hispanic 3.14 2.69 3.65 174
Hispanic/Latino 6.8 6.37 7.26 1039
Other 24.82 21.9 28.02 332
White,Non-Hispanic 8.54 8.17 8.92 2210
San Francisco Black, Non-Hispanic 10.36 8.19 12.92 88
Asian/Pacific Islander, Non-Hispanic 2.9 2.47 3.38 180
Hispanic/Latino 4.51 3.57 5.62 84
Other 20.58 15.11 27.23 58
White,Non-Hispanic 4.8 4.2 5.47 292
San Joaquin Black, Non-Hispanic 30.17 26.4 34.34 246
Asian/Pacific Islander, Non-Hispanic 5.62 4.49 6.94 87
Hispanic/Latino 15.51 14.22 16.89 632
Other 36.7 29.57 44.98 116
White,Non-Hispanic 22.36 20.89 23.91 931
Black, Non-Hispanic 27.12 12.04 50.86 12
San Luis Obispo Hispanic/Latino 6.94 5.11 9.21 55
Other 27.97 17.95 41.33 29
White,Non-Hispanic 12.75 11.44 14.17 413
San Mateo Black, Non-Hispanic 7.28 4.66 10.87 26
Asian/Pacific Islander, Non-Hispanic 2.75 2.19 3.41 86
Hispanic/Latino 5.38 4.45 6.43 134
Other 17.24 12.49 23.16 51
White,Non-Hispanic 6.42 5.72 7.19 377
Santa Barbara Black, Non-Hispanic 11.4 5.64 20.22 12
Hispanic/Latino 5.33 4.46 6.33 153
Other 11.8 6.71 19.26 20
White,Non-Hispanic 8.32 7.3 9.45 288
Santa Clara Black, Non-Hispanic 10.35 8 13.17 72
Asian/Pacific Islander, Non-Hispanic 2.76 2.42 3.14 240
Hispanic/Latino 6.56 5.94 7.22 477
Other 24.06 19.93 28.74 150
White,Non-Hispanic 7.54 7.02 8.1 869
Santa Cruz Hispanic/Latino 6.15 4.77 7.82 78
White,Non-Hispanic 6.97 5.92 8.16 179
Shasta Black, Non-Hispanic 68.26 38.53 112.39 16
Hispanic/Latino 13.77 8.91 20.28 29
Other 30.46 21.85 41.28 45
White,Non-Hispanic 40.58 37.88 43.42 926
Siskiyou White,Non-Hispanic 34.36 29.05 40.31 169
Solano Black, Non-Hispanic 17.85 15.25 20.78 175
Asian/Pacific Islander, Non-Hispanic 5.55 4.18 7.23 57
Hispanic/Latino 11.26 9.53 13.23 171
Other 22.26 16.53 29.33 64
White,Non-Hispanic 16.68 15.14 18.33 474
Sonoma Black, Non-Hispanic 21.4 14 31.5 27
Asian/Pacific Islander, Non-Hispanic 5.27 3.08 8.45 18
Hispanic/Latino 9.4 7.82 11.22 166
Other 19.56 13.43 27.39 39
White,Non-Hispanic 12.75 11.77 13.79 727
Stanislaus Black, Non-Hispanic 37.55 29.64 47.02 81
Asian/Pacific Islander, Non-Hispanic 4.61 2.88 7.04 22
Hispanic/Latino 18.73 17.11 20.48 593
Other 43.91 35.31 53.91 100
White,Non-Hispanic 28.4 26.73 30.14 1157
Sutter Asian/Pacific Islander, Non-Hispanic 7.07 4.08 11.45 17
Hispanic/Latino 19.22 14.7 24.7 75
Other 39.93 24.36 61.85 21
White,Non-Hispanic 23.07 19.72 26.82 181
Tehama Hispanic/Latino 27.33 20.31 36.16 56
Other 43.76 25.31 70.08 18
White,Non-Hispanic 52.65 47.25 58.47 390
Trinity White,Non-Hispanic 37.05 27.74 48.41 65
Tulare Black, Non-Hispanic 37.96 26.11 53.45 35
Asian/Pacific Islander, Non-Hispanic 9.05 5.63 13.79 22
Hispanic/Latino 21.12 19.55 22.78 813
Other 217.3 192.14 244.79 288
White,Non-Hispanic 23.58 21.57 25.71 548
Tuolumne Hispanic/Latino 23.87 15.42 35.58 26
White,Non-Hispanic 30.72 26.27 35.67 199
Ventura Black, Non-Hispanic 15.04 10.36 21.18 35
Asian/Pacific Islander, Non-Hispanic 2.95 1.93 4.33 27
Hispanic/Latino 4.99 4.37 5.67 264
Other 25.68 19.06 33.74 62
White,Non-Hispanic 10.14 9.34 10.98 672
Yolo Black, Non-Hispanic 34.08 21.92 50.55 26
Asian/Pacific Islander, Non-Hispanic 3.87 2.02 6.78 15
Hispanic/Latino 24.71 21.38 28.41 230
Other 28.02 17.69 42.18 29
White,Non-Hispanic 21.44 19.19 23.88 363
Yuba Black, Non-Hispanic 38.36 19.58 67.97 13
Hispanic/Latino 16.52 12.04 22.39 49
White,Non-Hispanic 32.6 28.41 37.22 226

Table 7. Heat-related emergency department vistis by gender and county, 2005-2020

County Gender Age-adjusted rate (per 100,000) Lower 95% Limit Upper 95% Limit Number of cases
California female 9.27 9.16 9.38 29199
male 15.86 15.71 16 48060
Alameda female 6.73 6.29 7.19 904
male 7.98 7.47 8.51 963
Amador female 26.7 20.37 34.34 79
male 38.56 31.77 46.35 127
Butte female 18.16 16.18 20.32 337
male 35.75 32.93 38.75 638
Calaveras female 19.84 15.05 25.62 72
male 41.69 34.39 50.01 135
Colusa female 26.84 19.46 36.04 45
male 45.74 35.99 57.28 78
Contra Costa female 9.28 8.66 9.94 859
male 13.45 12.66 14.27 1127
Del Norte male 10 6.49 14.76 26
El Dorado female 12.13 10.36 14.11 186
male 24.01 21.43 26.79 345
Fresno female 15.4 14.51 16.33 1154
male 30.68 29.41 32 2283
Glenn female 24.08 17.84 31.73 51
male 39.47 31.58 48.72 89
Humboldt female 5.53 4.17 7.18 60
male 8.74 7.05 10.71 98
Imperial female 43.49 40.02 47.18 595
male 125.34 119.48 131.41 1773
Inyo female 10.62 5.58 18.14 14
male 23.41 16.22 32.7 38
Kern female 19.58 18.5 20.7 1273
male 36.05 34.61 37.54 2484
Kings female 25.03 22.03 28.33 260
male 34.27 31.09 37.7 461
Lake female 20.13 16.29 24.6 109
male 38.04 32.61 44.09 194
Lassen female 18.87 12.88 26.57 34
male 21.25 16.49 27.01 78
Los Angeles female 6.57 6.4 6.75 5472
male 9.93 9.7 10.16 7706
Madera female 18.29 15.98 20.83 229
male 41.07 37.37 45.04 468
Marin female 5.13 4.18 6.25 116
male 7.74 6.54 9.1 155
Mariposa female 26.23 17.69 37.34 37
male 38.59 28.29 51.31 54
Mendocino female 18.02 14.94 21.54 131
male 37.59 33.08 42.53 263
Merced female 16.98 15.22 18.9 346
male 32.47 29.94 35.16 645
Modoc female 32.42 20.25 49.08 26
male 42.95 28.43 62.01 30
Monterey female 6.58 5.72 7.54 215
male 8.21 7.28 9.23 289
Napa female 10.79 8.92 12.94 124
male 15.95 13.68 18.5 180
Nevada female 10.77 8.52 13.43 98
male 21.84 18.49 25.61 168
Orange female 4.81 4.54 5.08 1238
male 7.97 7.62 8.34 1949
Placer female 12.62 11.34 13.99 382
male 22.6 20.86 24.45 638
Plumas female 25.71 17.9 35.73 45
male 44.96 33.72 58.55 63
Riverside female 15.7 15.12 16.29 2881
male 33.01 32.16 33.88 5804
Sacramento female 11.64 11.04 12.27 1418
male 19.82 19 20.67 2255
San Benito female 8.75 6.26 11.91 41
male 14.78 11.32 18.97 64
San Bernardino female 14.39 13.82 14.99 2400
male 24.52 23.74 25.32 3921
San Diego female 6.04 5.74 6.35 1577
male 9.65 9.27 10.05 2453
San Francisco female 4.28 3.81 4.8 344
male 5.04 4.51 5.61 358
San Joaquin female 13.08 12.14 14.06 741
male 23.13 21.85 24.46 1271
San Luis Obispo female 8.96 7.71 10.36 211
male 13.02 11.54 14.64 301
San Mateo female 4.56 4.04 5.11 310
male 6.26 5.62 6.94 364
Santa Barbara female 5.49 4.73 6.34 197
male 7.91 7 8.9 283
Santa Clara female 5.36 5 5.75 813
male 6.89 6.46 7.34 995
Santa Cruz female 5.34 4.39 6.44 118
male 7.54 6.37 8.85 156
Shasta female 24.05 21.5 26.8 360
male 48.7 44.96 52.67 667
Siskiyou female 18.95 14.25 24.64 62
male 40.31 33.51 48.05 134
Solano female 10.7 9.62 11.88 365
male 17 15.62 18.47 576
Sonoma female 8.95 8.06 9.93 394
male 14.69 13.5 15.95 583
Stanislaus female 17.67 16.42 18.98 757
male 29.43 27.75 31.17 1196
Sutter female 12.65 10.22 15.47 97
male 27.08 23.46 31.11 204
Tehama female 33.76 28.8 39.31 178
male 58.51 51.89 65.73 297
Trinity female 24.1 15.31 36.15 29
male 44.36 31.69 60.26 45
Tulare female 16.84 15.49 18.28 584
male 32.94 30.99 34.97 1122
Tuolumne female 16.42 12.41 21.27 68
male 40.07 34.24 46.6 181
Ventura female 6.16 5.58 6.78 425
male 9.56 8.83 10.35 635
Yolo female 13.87 12.08 15.85 230
male 28.05 25.38 30.92 433
Yuba female 16.59 13.37 20.34 94
male 35.95 31.18 41.26 209

Table 8. Heat-related emergency department visits by age group and county, 2005-2020

County Ages Age-adjusted rate (per 100,000) Lower 95% Limit Upper 95% Limit Number of cases
California <5 4.61 4.4 4.82 1863
5-17 8.65 8.47 8.82 9463
18-34 13.6 13.41 13.79 20327
35-64 12.83 12.68 12.98 30457
65+ 19.72 19.41 20.04 15149
Alameda <5 2.17 1.5 3.03 34
5-17 5.19 4.51 5.94 208
18-34 6.44 5.82 7.11 397
35-64 6.44 5.96 6.95 673
65+ 18.04 16.56 19.63 555
Amador 5-17 34.32 22.44 50.23 27
18-34 51.38 38.45 67.26 53
35-64 27.24 20.82 34.98 72
65+ 38.61 28.96 50.48 54
Butte <5 10.34 6.32 15.97 20
5-17 16 12.87 19.67 91
18-34 32.68 28.97 36.72 303
35-64 31.02 27.88 34.41 384
65+ 29.15 24.98 33.83 177
Calaveras 5-17 19.36 11.79 29.98 20
18-34 47.26 35.49 61.69 55
35-64 32.8 25.45 41.49 84
65+ 26.33 19.2 35.28 46
5-17 16.54 8.55 28.9 12
Colusa 18-34 42.18 28.98 59.27 33
35-64 41.59 30.83 54.84 52
65+ 49.49 30.84 75.29 22
Contra Costa <5 3.53 2.48 4.86 37
5-17 9.01 7.98 10.14 277
18-34 11.68 10.59 12.85 422
35-64 9.71 8.99 10.47 706
65+ 22.77 20.88 24.79 544
Del Norte 18-34 14.76 8.26 24.37 15
35-64 9.1 5.21 14.74 17
El Dorado 5-17 10.25 7.65 13.46 52
18-34 22.55 18.67 26.99 120
35-64 19.03 16.47 21.86 228
65+ 26.04 21.64 31.09 125
Fresno <5 9.94 8.27 11.85 124
5-17 13.91 12.66 15.26 449
18-34 26.69 25.09 28.36 1048
35-64 25.66 24.28 27.09 1336
65+ 28.9 26.35 31.63 480
Glenn 5-17 22.83 14.13 34.92 21
18-34 39.75 28.37 54.15 40
35-64 36.43 27.46 47.33 58
65+ 31.28 19.03 48.42 20
Humboldt 5-17 4.32 2.36 7.26 14
18-34 9.51 7.12 12.45 54
35-64 7.83 5.94 10.12 62
65+ 7.98 5.13 11.85 25
Imperial <5 11.82 7.85 17.08 28
5-17 33.13 28.7 38.05 200
18-34 97.22 90.11 104.75 698
35-64 112.22 105.66 119.08 1115
65+ 99.5 88.97 110.94 327
Inyo 35-64 18.8 11.48 28.98 23
65+ 21.91 11.62 37.48 13
Kern <5 9.76 8.03 11.76 111
5-17 16.45 15.01 17.99 480
18-34 31.65 29.82 33.57 1124
35-64 32.84 31.23 34.52 1579
65+ 34.39 31.3 37.71 463
Kings <5 10.35 6.32 15.99 20
5-17 20.35 16.56 24.75 100
18-34 34.17 29.92 38.86 234
35-64 34.15 30.29 38.36 285
65+ 37.17 29.49 46.27 82
Lake 5-17 15.61 10.1 23.04 25
18-34 39.67 31.24 49.68 76
35-64 32.56 26.84 39.1 133
65+ 29.95 22.94 38.46 63
Lassen 18-34 37.38 28.08 48.78 55
35-64 16.88 11.77 23.4 36
Los Angeles <5 4.52 4.12 4.94 470
5-17 6.39 6.1 6.7 1800
18-34 7.69 7.43 7.97 3116
35-64 7.59 7.38 7.81 4803
65+ 15.56 15.01 16.14 2989
Madera <5 9.07 5.29 14.53 17
5-17 19.93 16.19 24.26 99
18-34 32.78 28.36 37.69 198
35-64 34.45 30.57 38.68 293
65+ 30.26 24.3 37.23 90
Marin 5-17 5.88 4.12 8.14 36
18-34 6.64 4.82 8.91 44
35-64 5.35 4.29 6.57 97
65+ 12.02 9.62 14.83 89
Mariposa 18-34 40.32 24.21 63.06 19
35-64 36.06 24.92 50.3 41
65+ 32.08 19.77 49.2 21
Mendocino 5-17 17.62 12.59 23.99 40
18-34 42.42 35.19 50.69 121
35-64 26.39 22.11 31.24 148
65+ 30.83 24.15 38.79 75
Merced <5 8.71 5.88 12.43 30
5-17 13.66 11.4 16.23 129
18-34 24.85 21.96 28 274
35-64 27.65 24.95 30.57 388
65+ 39.97 34.16 46.5 170
Modoc 18-34 51.72 27.45 88.42 13
35-64 30.41 17.27 49.36 18
65+ 50.77 28.88 82.66 16
Monterey 5-17 4.03 3.01 5.28 52
18-34 10.64 9.16 12.28 186
35-64 7.86 6.77 9.06 191
65+ 7.8 5.99 9.98 64
Napa 5-17 8.78 6.04 12.34 33
18-34 17.46 13.93 21.63 84
35-64 11.91 9.64 14.56 100
65+ 21.54 17.04 26.86 80
Nevada 5-17 9.52 5.96 14.45 22
18-34 24.32 18.8 30.96 66
35-64 15.74 12.58 19.44 102
65+ 21.86 17.13 27.5 74
Orange <5 2.4 1.89 3.01 75
5-17 5.47 4.99 5.98 482
18-34 6.63 6.17 7.12 772
35-64 5.75 5.42 6.1 1151
65+ 11.23 10.41 12.1 707
Placer <5 3.99 2.12 6.82 13
5-17 16.44 14.02 19.16 164
18-34 21.65 19.04 24.51 249
35-64 15.84 14.21 17.61 364
65+ 23.77 20.78 27.06 230
Plumas 18-34 60.73 41.37 86 32
35-64 31.06 20.7 44.51 37
65+ 40.89 27.4 58.74 30
Riverside <5 5.99 5.07 7.02 152
5-17 12.53 11.73 13.37 920
18-34 27.18 26.08 28.32 2301
35-64 28.46 27.55 29.4 3734
65+ 33.8 32.15 35.52 1578
Sacramento <5 3.57 2.71 4.63 57
5-17 10.73 9.76 11.76 455
18-34 17.49 16.42 18.61 993
35-64 16.62 15.78 17.49 1507
65+ 23.06 21.32 24.9 661
San Benito 5-17 16.46 11.1 23.49 30
18-34 8.83 5.22 13.95 18
35-64 11.07 7.83 15.19 39
65+ 14.32 7.94 23.9 15
San Bernardino <5 6.24 5.3 7.3 156
5-17 11.61 10.82 12.43 820
18-34 20.17 19.21 21.16 1688
35-64 21.86 21.03 22.71 2702
65+ 28.85 27.03 30.77 955
San Diego <5 2.78 2.25 3.41 94
5-17 5.24 4.77 5.75 452
18-34 8.29 7.8 8.8 1090
35-64 8.35 7.94 8.77 1621
65+ 12.11 11.26 13 773
San Francisco 5-17 2.16 1.42 3.14 27
18-34 3.18 2.63 3.81 123
35-64 3.72 3.23 4.25 215
65+ 15.8 14.11 17.63 328
San Joaquin <5 7.6 5.86 9.69 65
5-17 12.7 11.31 14.22 301
18-34 19.11 17.5 20.83 521
35-64 19.55 18.21 20.97 807
65+ 24.89 22.21 27.81 318
San Luis Obispo 5-17 8.08 6 10.64 51
18-34 12.63 10.53 15.01 136
35-64 11.5 9.84 13.34 192
65+ 17.46 14.58 20.75 131
San Mateo 5-17 3.36 2.57 4.31 61
18-34 4.73 3.91 5.66 119
35-64 3.99 3.45 4.57 208
65+ 15.78 13.96 17.78 277
Santa Barbara 5-17 6.24 4.89 7.85 73
18-34 7.84 6.6 9.24 148
35-64 5.91 4.99 6.95 152
65+ 9.95 8.05 12.16 98
Santa Clara <5 2.39 1.76 3.18 47
5-17 4.27 3.71 4.88 212
18-34 5.37 4.83 5.94 368
35-64 5.15 4.75 5.57 632
65+ 15.3 14.03 16.64 549
Santa Cruz 5-17 4.08 2.68 5.93 27
18-34 6.33 4.87 8.08 66
35-64 6.88 5.66 8.28 120
65+ 10.57 7.92 13.8 55
Shasta 5-17 18.64 14.95 22.98 88
18-34 54.33 48.48 60.69 316
35-64 39.25 35.37 43.42 414
65+ 38.05 32.93 43.74 200
Siskiyou 5-17 20.89 13.24 31.38 23
18-34 57.47 45.07 72.23 74
35-64 24.93 18.82 32.31 65
65+ 19.83 13.43 28.24 31
Solano <5 4.01 2.33 6.42 17
5-17 9.85 8.18 11.78 121
18-34 17.2 15.19 19.39 268
35-64 13.67 12.27 15.17 370
65+ 18.98 16.17 22.14 165
Sonoma <5 3.44 1.93 5.68 15
5-17 7.14 5.74 8.78 90
18-34 14.26 12.52 16.17 244
35-64 10.74 9.6 11.97 354
65+ 22.06 19.49 24.86 274
Stanislaus <5 12.33 9.75 15.39 78
5-17 13.7 12.01 15.56 237
18-34 23.98 21.9 26.2 493
35-64 26.69 24.87 28.6 823
65+ 33.23 29.67 37.09 322
Sutter 5-17 11.73 8.17 16.31 35
18-34 22.83 18.12 28.39 81
35-64 22.87 19 27.29 127
65+ 25.05 18.74 32.82 53
Tehama 5-17 26.02 19.19 34.51 48
18-34 61.4 51.19 73.05 128
35-64 50.13 43.05 58.01 196
65+ 53.15 42.85 65.2 93
Trinity 18-34 64.6 40.91 97.11 23
35-64 36.88 24.1 53.76 31
65+ 35.97 21.08 57.48 18
Tulare <5 6.48 4.65 8.79 41
5-17 12.54 10.89 14.38 206
18-34 30.56 28.04 33.24 546
35-64 29.55 27.39 31.83 706
65+ 27.84 24.15 31.94 207
Tuolumne 5-17 16.07 9.66 25.17 19
18-34 58.58 47.58 71.38 99
35-64 27.92 22.08 34.76 92
65+ 19.4 13.7 26.66 38
Ventura <5 1.95 1.14 3.13 17
5-17 7.15 6.14 8.29 177
18-34 8.63 7.61 9.74 263
35-64 7.32 6.59 8.1 391
65+ 12.21 10.61 13.99 212
Yolo 5-17 15.36 12.3 18.96 87
18-34 19.08 16.26 22.22 187
35-64 23.5 20.72 26.55 266
65+ 31.12 25.58 37.49 112
Yuba 5-17 12.28 8.22 17.63 29
18-34 41.08 33.99 49.22 118
35-64 27.14 22.29 32.71 113
65+ 31.31 22.37 42.66 41

Notes About the Data

  • Data Sources: Patient Discharge Data (2000-2020) and Emergency Department Data (2005-2020) from the California Department of Health Care Access and Information (HCAI), formerly known as the Office of Statewide Health Planning and Development (OSHPD).
  • The 95% Confidence Interval (CI) is the range of values that likely contains the true heat-related event rate per 100,000 in the population.
  • Data are not available if the number of events are less than 12.