CA / county disease rankings
Counties with the highest melanoma incidence rates in California
Among 55 California counties with published values, the counties with the highest melanoma incidence rates are San Luis Obispo County, CA (60.2, 2.53 times the U.S. rate of 23.8), Marin County, CA (59.6, 2.5 times the U.S. rate of 23.8) and Santa Cruz County, CA (50.3, 2.11 times the U.S. rate of 23.8). Values are per 100,000, age-adjusted. 25 of the 55 are significantly above the U.S. rate.
Source: NCI and CDC State Cancer Profiles, both sexes, all ages. These are county-level figures, age-adjusted as published by the source, compared with the U.S. rate. A high rate does not prove an environmental cause: age, smoking, income, access to care, screening and chance all move county rates, and small counties swing widely. Significant means the lower bound of the county’s 95 percent confidence interval is above the U.S. rate.
All California counties, highest first
Melanoma of the skin cancer new cases, per 100,000, age-adjusted.
| Rank | County | State | Value | U.S. rate | Times reference | Significant |
|---|---|---|---|---|---|---|
| 1 | San Luis Obispo County | CA | 60.2 | 23.8 | 2.53x | Significant |
| 2 | Marin County | CA | 59.6 | 23.8 | 2.5x | Significant |
| 3 | Santa Cruz County | CA | 50.3 | 23.8 | 2.11x | Significant |
| 4 | Nevada County | CA | 45.4 | 23.8 | 1.91x | Significant |
| 5 | Mono County | CA | 44.4 | 23.8 | 1.87x | Significant |
| 6 | Sonoma County | CA | 42.9 | 23.8 | 1.8x | Significant |
| 7 | Placer County | CA | 41.7 | 23.8 | 1.75x | Significant |
| 8 | El Dorado County | CA | 40.8 | 23.8 | 1.71x | Significant |
| 9 | Butte County | CA | 37.3 | 23.8 | 1.57x | Significant |
| 10 | Napa County | CA | 37.1 | 23.8 | 1.56x | Significant |
| 11 | Inyo County | CA | 36.5 | 23.8 | 1.53x | Significant |
| 12 | Santa Barbara County | CA | 36 | 23.8 | 1.51x | Significant |
| 13 | Tuolumne County | CA | 32.3 | 23.8 | 1.36x | Significant |
| 14 | Modoc County | CA | 31.6 | 23.8 | 1.33x | No |
| 15 | Ventura County | CA | 31.2 | 23.8 | 1.31x | Significant |
| 16 | Contra Costa County | CA | 31.1 | 23.8 | 1.31x | Significant |
| 17 | Mariposa County | CA | 31 | 23.8 | 1.3x | No |
| 18 | San Diego County | CA | 30.8 | 23.8 | 1.29x | Significant |
| 19 | Calaveras County | CA | 30.4 | 23.8 | 1.28x | Significant |
| 20 | Orange County | CA | 30.3 | 23.8 | 1.27x | Significant |
| 21 | Shasta County | CA | 29.9 | 23.8 | 1.26x | Significant |
| 22 | San Mateo County | CA | 29.6 | 23.8 | 1.24x | Significant |
| 23 | Yolo County | CA | 29.6 | 23.8 | 1.24x | Significant |
| 24 | Amador County | CA | 28.7 | 23.8 | 1.21x | No |
| 25 | Humboldt County | CA | 28.7 | 23.8 | 1.21x | Significant |
| 26 | Mendocino County | CA | 28.3 | 23.8 | 1.19x | Significant |
| 27 | Glenn County | CA | 27.9 | 23.8 | 1.17x | No |
| 28 | Plumas County | CA | 27.9 | 23.8 | 1.17x | No |
| 29 | Monterey County | CA | 26.5 | 23.8 | 1.11x | Significant |
| 30 | San Benito County | CA | 25.5 | 23.8 | 1.07x | No |
| 31 | Lake County | CA | 25 | 23.8 | 1.05x | No |
| 32 | Riverside County | CA | 24.9 | 23.8 | 1.05x | Significant |
| 33 | Madera County | CA | 24.6 | 23.8 | 1.03x | No |
| 34 | Sutter County | CA | 24.5 | 23.8 | 1.03x | No |
| 35 | Sacramento County | CA | 24.4 | 23.8 | 1.03x | No |
| 36 | Santa Clara County | CA | 24.2 | 23.8 | 1.02x | No |
| 37 | Solano County | CA | 23.8 | 23.8 | 1x | No |
| 38 | Tehama County | CA | 23.8 | 23.8 | 1x | No |
| 39 | Trinity County | CA | 23.6 | 23.8 | 0.99x | No |
| 40 | Stanislaus County | CA | 22.5 | 23.8 | 0.95x | No |
| 41 | Siskiyou County | CA | 22.1 | 23.8 | 0.93x | No |
| 42 | San Francisco County | CA | 21.1 | 23.8 | 0.89x | No |
| 43 | Yuba County | CA | 20.7 | 23.8 | 0.87x | No |
| 44 | Alameda County | CA | 20.5 | 23.8 | 0.86x | No |
| 45 | Fresno County | CA | 19.3 | 23.8 | 0.81x | No |
| 46 | Kern County | CA | 19.3 | 23.8 | 0.81x | No |
| 47 | San Bernardino County | CA | 17.7 | 23.8 | 0.74x | No |
| 48 | San Joaquin County | CA | 17.7 | 23.8 | 0.74x | No |
| 49 | Lassen County | CA | 16.6 | 23.8 | 0.7x | No |
| 50 | Del Norte County | CA | 16.5 | 23.8 | 0.69x | No |
| 51 | Los Angeles County | CA | 13.6 | 23.8 | 0.57x | No |
| 52 | Tulare County | CA | 13.4 | 23.8 | 0.56x | No |
| 53 | Merced County | CA | 12.3 | 23.8 | 0.52x | No |
| 54 | Kings County | CA | 11.6 | 23.8 | 0.49x | No |
| 55 | Imperial County | CA | 6.8 | 23.8 | 0.29x | No |