State Cancer Profiles

Interpretation of Demographics Data

Demographic Data Report for California by County
Population: Age 40-64
All Races (includes Hispanic), Both Sexes
2020-2024 American Community Survey 5-Year Data
Sorted by Percent

California

• 2023 Rural-Urban Continuum Codes Φ : N/A
• Value (Percent) : The value is 31.3 percent.
• People (Age 40-64) : The number of people (age 40-64) is 12,308,540.
• Rank within US : This county is ranked 27 of 52

United States

• 2023 Rural-Urban Continuum Codes Φ : N/A
• Value (Percent) : The value is 31.3 percent.
• People (Age 40-64) : The number of people (age 40-64) is 104,825,270.
• Rank within US : N/A

Yolo County

• 2023 Rural-Urban Continuum Codes Φ : Urban
• Value (Percent) : The value is 26.4 percent.
• People (Age 40-64) : The number of people (age 40-64) is 58,324.
• Rank within US : This county is ranked 2993 of 3143

Kings County

• 2023 Rural-Urban Continuum Codes Φ : Urban
• Value (Percent) : The value is 26.9 percent.
• People (Age 40-64) : The number of people (age 40-64) is 41,313.
• Rank within US : This county is ranked 2949 of 3143

Merced County

• 2023 Rural-Urban Continuum Codes Φ : Urban
• Value (Percent) : The value is 26.9 percent.
• People (Age 40-64) : The number of people (age 40-64) is 77,953.
• Rank within US : This county is ranked 2949 of 3143

Modoc County

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Value (Percent) : The value is 26.9 percent.
• People (Age 40-64) : The number of people (age 40-64) is 2,311.
• Rank within US : This county is ranked 2949 of 3143

Butte County

• 2023 Rural-Urban Continuum Codes Φ : Urban
• Value (Percent) : The value is 27.0 percent.
• People (Age 40-64) : The number of people (age 40-64) is 56,184.
• Rank within US : This county is ranked 2940 of 3143

Imperial County

• 2023 Rural-Urban Continuum Codes Φ : Urban
• Value (Percent) : The value is 27.1 percent.
• People (Age 40-64) : The number of people (age 40-64) is 48,816.
• Rank within US : This county is ranked 2929 of 3143

Tulare County

• 2023 Rural-Urban Continuum Codes Φ : Urban
• Value (Percent) : The value is 27.1 percent.
• People (Age 40-64) : The number of people (age 40-64) is 129,628.
• Rank within US : This county is ranked 2929 of 3143

Santa Barbara County

• 2023 Rural-Urban Continuum Codes Φ : Urban
• Value (Percent) : The value is 27.2 percent.
• People (Age 40-64) : The number of people (age 40-64) is 120,804.
• Rank within US : This county is ranked 2915 of 3143

Yuba County

• 2023 Rural-Urban Continuum Codes Φ : Urban
• Value (Percent) : The value is 27.4 percent.
• People (Age 40-64) : The number of people (age 40-64) is 23,183.
• Rank within US : This county is ranked 2897 of 3143

Fresno County

• 2023 Rural-Urban Continuum Codes Φ : Urban
• Value (Percent) : The value is 27.7 percent.
• People (Age 40-64) : The number of people (age 40-64) is 281,824.
• Rank within US : This county is ranked 2862 of 3143

Kern County

• 2023 Rural-Urban Continuum Codes Φ : Urban
• Value (Percent) : The value is 27.7 percent.
• People (Age 40-64) : The number of people (age 40-64) is 253,658.
• Rank within US : This county is ranked 2862 of 3143

Alpine County

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Value (Percent) : The value is 28.3 percent.
• People (Age 40-64) : The number of people (age 40-64) is 457.
• Rank within US : This county is ranked 2784 of 3143

San Luis Obispo County

• 2023 Rural-Urban Continuum Codes Φ : Urban
• Value (Percent) : The value is 28.3 percent.
• People (Age 40-64) : The number of people (age 40-64) is 79,617.
• Rank within US : This county is ranked 2784 of 3143

Madera County

• 2023 Rural-Urban Continuum Codes Φ : Urban
• Value (Percent) : The value is 28.6 percent.
• People (Age 40-64) : The number of people (age 40-64) is 46,051.
• Rank within US : This county is ranked 2728 of 3143

Glenn County

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Value (Percent) : The value is 29.0 percent.
• People (Age 40-64) : The number of people (age 40-64) is 8,253.
• Rank within US : This county is ranked 2644 of 3143

Stanislaus County

• 2023 Rural-Urban Continuum Codes Φ : Urban
• Value (Percent) : The value is 29.1 percent.
• People (Age 40-64) : The number of people (age 40-64) is 161,356.
• Rank within US : This county is ranked 2625 of 3143

Del Norte County

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Value (Percent) : The value is 29.4 percent.
• People (Age 40-64) : The number of people (age 40-64) is 7,977.
• Rank within US : This county is ranked 2559 of 3143

Monterey County

• 2023 Rural-Urban Continuum Codes Φ : Urban
• Value (Percent) : The value is 29.4 percent.
• People (Age 40-64) : The number of people (age 40-64) is 128,511.
• Rank within US : This county is ranked 2559 of 3143

Sutter County

• 2023 Rural-Urban Continuum Codes Φ : Urban
• Value (Percent) : The value is 29.6 percent.
• People (Age 40-64) : The number of people (age 40-64) is 29,228.
• Rank within US : This county is ranked 2488 of 3143

Colusa County

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Value (Percent) : The value is 29.7 percent.
• People (Age 40-64) : The number of people (age 40-64) is 6,532.
• Rank within US : This county is ranked 2457 of 3143

Plumas County

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Value (Percent) : The value is 29.7 percent.
• People (Age 40-64) : The number of people (age 40-64) is 5,777.
• Rank within US : This county is ranked 2457 of 3143

San Benito County

• 2023 Rural-Urban Continuum Codes Φ : Urban
• Value (Percent) : The value is 29.8 percent.
• People (Age 40-64) : The number of people (age 40-64) is 20,086.
• Rank within US : This county is ranked 2423 of 3143

Tehama County

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Value (Percent) : The value is 29.9 percent.
• People (Age 40-64) : The number of people (age 40-64) is 19,472.
• Rank within US : This county is ranked 2397 of 3143

Humboldt County

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Value (Percent) : The value is 30.0 percent.
• People (Age 40-64) : The number of people (age 40-64) is 40,416.
• Rank within US : This county is ranked 2361 of 3143

San Bernardino County

• 2023 Rural-Urban Continuum Codes Φ : Urban
• Value (Percent) : The value is 30.0 percent.
• People (Age 40-64) : The number of people (age 40-64) is 659,038.
• Rank within US : This county is ranked 2361 of 3143

San Joaquin County

• 2023 Rural-Urban Continuum Codes Φ : Urban
• Value (Percent) : The value is 30.0 percent.
• People (Age 40-64) : The number of people (age 40-64) is 239,335.
• Rank within US : This county is ranked 2361 of 3143

Siskiyou County

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Value (Percent) : The value is 30.3 percent.
• People (Age 40-64) : The number of people (age 40-64) is 13,162.
• Rank within US : This county is ranked 2260 of 3143

Riverside County

• 2023 Rural-Urban Continuum Codes Φ : Urban
• Value (Percent) : The value is 30.5 percent.
• People (Age 40-64) : The number of people (age 40-64) is 756,733.
• Rank within US : This county is ranked 2198 of 3143

San Diego County

• 2023 Rural-Urban Continuum Codes Φ : Urban
• Value (Percent) : The value is 30.6 percent.
• People (Age 40-64) : The number of people (age 40-64) is 1,005,697.
• Rank within US : This county is ranked 2150 of 3143

Mendocino County

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Value (Percent) : The value is 30.8 percent.
• People (Age 40-64) : The number of people (age 40-64) is 27,786.
• Rank within US : This county is ranked 2054 of 3143

Santa Cruz County

• 2023 Rural-Urban Continuum Codes Φ : Urban
• Value (Percent) : The value is 30.8 percent.
• People (Age 40-64) : The number of people (age 40-64) is 81,606.
• Rank within US : This county is ranked 2054 of 3143

Sacramento County

• 2023 Rural-Urban Continuum Codes Φ : Urban
• Value (Percent) : The value is 30.9 percent.
• People (Age 40-64) : The number of people (age 40-64) is 493,030.
• Rank within US : This county is ranked 1998 of 3143

Shasta County

• 2023 Rural-Urban Continuum Codes Φ : Urban
• Value (Percent) : The value is 31.1 percent.
• People (Age 40-64) : The number of people (age 40-64) is 56,355.
• Rank within US : This county is ranked 1896 of 3143

Tuolumne County

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Value (Percent) : The value is 31.1 percent.
• People (Age 40-64) : The number of people (age 40-64) is 16,945.
• Rank within US : This county is ranked 1896 of 3143

Lake County

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Value (Percent) : The value is 31.3 percent.
• People (Age 40-64) : The number of people (age 40-64) is 21,315.
• Rank within US : This county is ranked 1808 of 3143

Lassen County

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Value (Percent) : The value is 31.4 percent.
• People (Age 40-64) : The number of people (age 40-64) is 9,524.
• Rank within US : This county is ranked 1748 of 3143

Solano County

• 2023 Rural-Urban Continuum Codes Φ : Urban
• Value (Percent) : The value is 31.4 percent.
• People (Age 40-64) : The number of people (age 40-64) is 142,011.
• Rank within US : This county is ranked 1748 of 3143

Nevada County

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Value (Percent) : The value is 31.8 percent.
• People (Age 40-64) : The number of people (age 40-64) is 32,618.
• Rank within US : This county is ranked 1520 of 3143

Ventura County

• 2023 Rural-Urban Continuum Codes Φ : Urban
• Value (Percent) : The value is 32.1 percent.
• People (Age 40-64) : The number of people (age 40-64) is 268,969.
• Rank within US : This county is ranked 1357 of 3143

Inyo County

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Value (Percent) : The value is 32.3 percent.
• People (Age 40-64) : The number of people (age 40-64) is 6,055.
• Rank within US : This county is ranked 1236 of 3143

Los Angeles County

• 2023 Rural-Urban Continuum Codes Φ : Urban
• Value (Percent) : The value is 32.3 percent.
• People (Age 40-64) : The number of people (age 40-64) is 3,168,465.
• Rank within US : This county is ranked 1236 of 3143

Santa Clara County

• 2023 Rural-Urban Continuum Codes Φ : Urban
• Value (Percent) : The value is 32.3 percent.
• People (Age 40-64) : The number of people (age 40-64) is 614,893.
• Rank within US : This county is ranked 1236 of 3143

San Francisco County

• 2023 Rural-Urban Continuum Codes Φ : Urban
• Value (Percent) : The value is 32.4 percent.
• People (Age 40-64) : The number of people (age 40-64) is 268,672.
• Rank within US : This county is ranked 1175 of 3143

Mariposa County

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Value (Percent) : The value is 32.6 percent.
• People (Age 40-64) : The number of people (age 40-64) is 5,571.
• Rank within US : This county is ranked 1055 of 3143

Napa County

• 2023 Rural-Urban Continuum Codes Φ : Urban
• Value (Percent) : The value is 32.7 percent.
• People (Age 40-64) : The number of people (age 40-64) is 44,137.
• Rank within US : This county is ranked 1006 of 3143

Sonoma County

• 2023 Rural-Urban Continuum Codes Φ : Urban
• Value (Percent) : The value is 32.7 percent.
• People (Age 40-64) : The number of people (age 40-64) is 158,787.
• Rank within US : This county is ranked 1006 of 3143

Calaveras County

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Value (Percent) : The value is 32.8 percent.
• People (Age 40-64) : The number of people (age 40-64) is 15,151.
• Rank within US : This county is ranked 961 of 3143

Orange County

• 2023 Rural-Urban Continuum Codes Φ : Urban
• Value (Percent) : The value is 33.0 percent.
• People (Age 40-64) : The number of people (age 40-64) is 1,045,184.
• Rank within US : This county is ranked 851 of 3143

Alameda County

• 2023 Rural-Urban Continuum Codes Φ : Urban
• Value (Percent) : The value is 33.1 percent.
• People (Age 40-64) : The number of people (age 40-64) is 545,816.
• Rank within US : This county is ranked 790 of 3143

Placer County

• 2023 Rural-Urban Continuum Codes Φ : Urban
• Value (Percent) : The value is 33.2 percent.
• People (Age 40-64) : The number of people (age 40-64) is 139,200.
• Rank within US : This county is ranked 745 of 3143

Amador County

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Value (Percent) : The value is 33.5 percent.
• People (Age 40-64) : The number of people (age 40-64) is 13,862.
• Rank within US : This county is ranked 603 of 3143

San Mateo County

• 2023 Rural-Urban Continuum Codes Φ : Urban
• Value (Percent) : The value is 33.5 percent.
• People (Age 40-64) : The number of people (age 40-64) is 248,735.
• Rank within US : This county is ranked 603 of 3143

Contra Costa County

• 2023 Rural-Urban Continuum Codes Φ : Urban
• Value (Percent) : The value is 33.7 percent.
• People (Age 40-64) : The number of people (age 40-64) is 392,663.
• Rank within US : This county is ranked 519 of 3143

El Dorado County

• 2023 Rural-Urban Continuum Codes Φ : Urban
• Value (Percent) : The value is 34.0 percent.
• People (Age 40-64) : The number of people (age 40-64) is 65,464.
• Rank within US : This county is ranked 425 of 3143

Trinity County

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Value (Percent) : The value is 34.5 percent.
• People (Age 40-64) : The number of people (age 40-64) is 5,477.
• Rank within US : This county is ranked 282 of 3143

Marin County

• 2023 Rural-Urban Continuum Codes Φ : Urban
• Value (Percent) : The value is 36.0 percent.
• People (Age 40-64) : The number of people (age 40-64) is 92,815.
• Rank within US : This county is ranked 90 of 3143

Mono County

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Value (Percent) : The value is 36.1 percent.
• People (Age 40-64) : The number of people (age 40-64) is 4,740.
• Rank within US : This county is ranked 80 of 3143

Sierra County

• 2023 Rural-Urban Continuum Codes Φ : Rural
• Value (Percent) : The value is 36.3 percent.
• People (Age 40-64) : The number of people (age 40-64) is 998.
• Rank within US : This county is ranked 69 of 3143

Notes:
Created by statecancerprofiles.cancer.gov on 03/21/2026 7:22 pm.

Φ Rural–urban county classifications are based on the 2023 USDA Rural–Urban Continuum Codes (except for Connecticut Counties which use 2013 codes). State-level cancer rates for rural areas are calculated using cancer cases registered exclusively in rural counties, while state-level cancer rates for urban areas are calculated using cases registered exclusively in urban counties.

Source: Demographic data provided by the Census Bureau and the American Community Survey.

For more information about Population: Age 40-64, see the dictionary.

Data for United States does not include Puerto Rico.