Interpretation of Demographics Data
Demographic Data Report for California by County
Population: Age 40 and over
All Races (includes Hispanic), Both Sexes
2019-2023 American Community Survey 5-Year Data
Sorted by Rank
California
- 2023 Rural-Urban Continuum Codes Φ : N/A
- Value (Percent) : The value is 46.7 percent.
- People (Age 40 And Over) : The number of people (age 40 and over) is 18,316,465.
- Rank within US : This state is ranked 41 of 52
United States
- 2023 Rural-Urban Continuum Codes Φ : N/A
- Value (Percent) : The value is 48.3 percent.
- People (Age 40 And Over) : The number of people (age 40 and over) is 160,683,909.
- Rank within US : N/A
Kings County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 37.9 percent.
- People (Age 40 And Over) : The number of people (age 40 and over) is 57,936.
- Rank within US : This county is ranked 3079 of 3143
Merced County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 38.7 percent.
- People (Age 40 And Over) : The number of people (age 40 and over) is 110,657.
- Rank within US : This county is ranked 3059 of 3143
Tulare County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 38.9 percent.
- People (Age 40 And Over) : The number of people (age 40 and over) is 185,150.
- Rank within US : This county is ranked 3051 of 3143
Kern County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 39.3 percent.
- People (Age 40 And Over) : The number of people (age 40 and over) is 358,023.
- Rank within US : This county is ranked 3043 of 3143
Yolo County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 40.0 percent.
- People (Age 40 And Over) : The number of people (age 40 and over) is 87,146.
- Rank within US : This county is ranked 3023 of 3143
Yuba County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 40.1 percent.
- People (Age 40 And Over) : The number of people (age 40 and over) is 33,314.
- Rank within US : This county is ranked 3020 of 3143
Fresno County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 40.3 percent.
- People (Age 40 And Over) : The number of people (age 40 and over) is 408,111.
- Rank within US : This county is ranked 3012 of 3143
Imperial County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 40.6 percent.
- People (Age 40 And Over) : The number of people (age 40 and over) is 72,746.
- Rank within US : This county is ranked 3004 of 3143
San Bernardino County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 42.3 percent.
- People (Age 40 And Over) : The number of people (age 40 and over) is 925,077.
- Rank within US : This county is ranked 2922 of 3143
Stanislaus County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 42.8 percent.
- People (Age 40 And Over) : The number of people (age 40 and over) is 236,373.
- Rank within US : This county is ranked 2903 of 3143
Madera County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 43.0 percent.
- People (Age 40 And Over) : The number of people (age 40 and over) is 68,312.
- Rank within US : This county is ranked 2889 of 3143
San Joaquin County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 43.3 percent.
- People (Age 40 And Over) : The number of people (age 40 and over) is 341,175.
- Rank within US : This county is ranked 2873 of 3143
San Benito County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 43.4 percent.
- People (Age 40 And Over) : The number of people (age 40 and over) is 28,671.
- Rank within US : This county is ranked 2866 of 3143
Santa Barbara County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 43.7 percent.
- People (Age 40 And Over) : The number of people (age 40 and over) is 193,896.
- Rank within US : This county is ranked 2842 of 3143
Monterey County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 43.9 percent.
- People (Age 40 And Over) : The number of people (age 40 and over) is 191,548.
- Rank within US : This county is ranked 2829 of 3143
Colusa County
- 2023 Rural-Urban Continuum Codes Φ : Rural
- Value (Percent) : The value is 45.3 percent.
- People (Age 40 And Over) : The number of people (age 40 and over) is 9,926.
- Rank within US : This county is ranked 2732 of 3143
Butte County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 45.5 percent.
- People (Age 40 And Over) : The number of people (age 40 and over) is 95,387.
- Rank within US : This county is ranked 2713 of 3143
Glenn County
- 2023 Rural-Urban Continuum Codes Φ : Rural
- Value (Percent) : The value is 45.6 percent.
- People (Age 40 And Over) : The number of people (age 40 and over) is 13,058.
- Rank within US : This county is ranked 2697 of 3143
Riverside County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 45.6 percent.
- People (Age 40 And Over) : The number of people (age 40 and over) is 1,117,756.
- Rank within US : This county is ranked 2697 of 3143
Sutter County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 45.6 percent.
- People (Age 40 And Over) : The number of people (age 40 and over) is 45,119.
- Rank within US : This county is ranked 2697 of 3143
San Diego County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 45.7 percent.
- People (Age 40 And Over) : The number of people (age 40 and over) is 1,501,432.
- Rank within US : This county is ranked 2687 of 3143
Sacramento County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 45.9 percent.
- People (Age 40 And Over) : The number of people (age 40 and over) is 727,044.
- Rank within US : This county is ranked 2669 of 3143
Santa Clara County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 46.8 percent.
- People (Age 40 And Over) : The number of people (age 40 and over) is 890,438.
- Rank within US : This county is ranked 2556 of 3143
Los Angeles County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 47.1 percent.
- People (Age 40 And Over) : The number of people (age 40 and over) is 4,634,641.
- Rank within US : This county is ranked 2522 of 3143
Lassen County
- 2023 Rural-Urban Continuum Codes Φ : Rural
- Value (Percent) : The value is 47.4 percent.
- People (Age 40 And Over) : The number of people (age 40 and over) is 14,778.
- Rank within US : This county is ranked 2489 of 3143
Alameda County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 48.0 percent.
- People (Age 40 And Over) : The number of people (age 40 and over) is 792,869.
- Rank within US : This county is ranked 2413 of 3143
Solano County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 48.6 percent.
- People (Age 40 And Over) : The number of people (age 40 and over) is 219,191.
- Rank within US : This county is ranked 2301 of 3143
Orange County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 48.8 percent.
- People (Age 40 And Over) : The number of people (age 40 and over) is 1,544,859.
- Rank within US : This county is ranked 2265 of 3143
Ventura County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 49.3 percent.
- People (Age 40 And Over) : The number of people (age 40 and over) is 413,127.
- Rank within US : This county is ranked 2161 of 3143
Humboldt County
- 2023 Rural-Urban Continuum Codes Φ : Rural
- Value (Percent) : The value is 49.4 percent.
- People (Age 40 And Over) : The number of people (age 40 and over) is 66,843.
- Rank within US : This county is ranked 2131 of 3143
San Francisco County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 49.5 percent.
- People (Age 40 And Over) : The number of people (age 40 and over) is 413,796.
- Rank within US : This county is ranked 2114 of 3143
Santa Cruz County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 49.6 percent.
- People (Age 40 And Over) : The number of people (age 40 and over) is 131,850.
- Rank within US : This county is ranked 2089 of 3143
San Luis Obispo County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 50.2 percent.
- People (Age 40 And Over) : The number of people (age 40 and over) is 141,285.
- Rank within US : This county is ranked 1964 of 3143
Tehama County
- 2023 Rural-Urban Continuum Codes Φ : Rural
- Value (Percent) : The value is 50.2 percent.
- People (Age 40 And Over) : The number of people (age 40 and over) is 32,879.
- Rank within US : This county is ranked 1964 of 3143
Contra Costa County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 50.5 percent.
- People (Age 40 And Over) : The number of people (age 40 and over) is 586,303.
- Rank within US : This county is ranked 1892 of 3143
Mono County
- 2023 Rural-Urban Continuum Codes Φ : Rural
- Value (Percent) : The value is 50.7 percent.
- People (Age 40 And Over) : The number of people (age 40 and over) is 6,680.
- Rank within US : This county is ranked 1843 of 3143
Del Norte County
- 2023 Rural-Urban Continuum Codes Φ : Rural
- Value (Percent) : The value is 50.8 percent.
- People (Age 40 And Over) : The number of people (age 40 and over) is 13,873.
- Rank within US : This county is ranked 1823 of 3143
San Mateo County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 50.9 percent.
- People (Age 40 And Over) : The number of people (age 40 and over) is 379,080.
- Rank within US : This county is ranked 1802 of 3143
Alpine County
- 2023 Rural-Urban Continuum Codes Φ : Rural
- Value (Percent) : The value is 51.1 percent.
- People (Age 40 And Over) : The number of people (age 40 and over) is 866.
- Rank within US : This county is ranked 1751 of 3143
Shasta County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 52.4 percent.
- People (Age 40 And Over) : The number of people (age 40 and over) is 95,137.
- Rank within US : This county is ranked 1415 of 3143
Napa County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 53.2 percent.
- People (Age 40 And Over) : The number of people (age 40 and over) is 72,425.
- Rank within US : This county is ranked 1214 of 3143
Placer County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 53.5 percent.
- People (Age 40 And Over) : The number of people (age 40 and over) is 220,454.
- Rank within US : This county is ranked 1137 of 3143
Sonoma County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 53.9 percent.
- People (Age 40 And Over) : The number of people (age 40 and over) is 261,520.
- Rank within US : This county is ranked 1056 of 3143
Mendocino County
- 2023 Rural-Urban Continuum Codes Φ : Rural
- Value (Percent) : The value is 54.5 percent.
- People (Age 40 And Over) : The number of people (age 40 and over) is 49,469.
- Rank within US : This county is ranked 912 of 3143
Lake County
- 2023 Rural-Urban Continuum Codes Φ : Rural
- Value (Percent) : The value is 55.0 percent.
- People (Age 40 And Over) : The number of people (age 40 and over) is 37,446.
- Rank within US : This county is ranked 818 of 3143
El Dorado County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 57.1 percent.
- People (Age 40 And Over) : The number of people (age 40 and over) is 109,853.
- Rank within US : This county is ranked 535 of 3143
Inyo County
- 2023 Rural-Urban Continuum Codes Φ : Rural
- Value (Percent) : The value is 57.5 percent.
- People (Age 40 And Over) : The number of people (age 40 and over) is 10,818.
- Rank within US : This county is ranked 493 of 3143
Siskiyou County
- 2023 Rural-Urban Continuum Codes Φ : Rural
- Value (Percent) : The value is 57.9 percent.
- People (Age 40 And Over) : The number of people (age 40 and over) is 25,387.
- Rank within US : This county is ranked 446 of 3143
Modoc County
- 2023 Rural-Urban Continuum Codes Φ : Rural
- Value (Percent) : The value is 58.5 percent.
- People (Age 40 And Over) : The number of people (age 40 and over) is 5,059.
- Rank within US : This county is ranked 371 of 3143
Tuolumne County
- 2023 Rural-Urban Continuum Codes Φ : Rural
- Value (Percent) : The value is 59.4 percent.
- People (Age 40 And Over) : The number of people (age 40 and over) is 32,595.
- Rank within US : This county is ranked 305 of 3143
Marin County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 59.5 percent.
- People (Age 40 And Over) : The number of people (age 40 and over) is 153,894.
- Rank within US : This county is ranked 296 of 3143
Amador County
- 2023 Rural-Urban Continuum Codes Φ : Rural
- Value (Percent) : The value is 60.9 percent.
- People (Age 40 And Over) : The number of people (age 40 and over) is 25,000.
- Rank within US : This county is ranked 206 of 3143
Plumas County
- 2023 Rural-Urban Continuum Codes Φ : Rural
- Value (Percent) : The value is 61.0 percent.
- People (Age 40 And Over) : The number of people (age 40 and over) is 11,965.
- Rank within US : This county is ranked 197 of 3143
Nevada County
- 2023 Rural-Urban Continuum Codes Φ : Rural
- Value (Percent) : The value is 61.2 percent.
- People (Age 40 And Over) : The number of people (age 40 and over) is 62,673.
- Rank within US : This county is ranked 186 of 3143
Calaveras County
- 2023 Rural-Urban Continuum Codes Φ : Rural
- Value (Percent) : The value is 62.1 percent.
- People (Age 40 And Over) : The number of people (age 40 and over) is 28,559.
- Rank within US : This county is ranked 159 of 3143
Mariposa County
- 2023 Rural-Urban Continuum Codes Φ : Rural
- Value (Percent) : The value is 63.1 percent.
- People (Age 40 And Over) : The number of people (age 40 and over) is 10,761.
- Rank within US : This county is ranked 124 of 3143
Trinity County
- 2023 Rural-Urban Continuum Codes Φ : Rural
- Value (Percent) : The value is 64.8 percent.
- People (Age 40 And Over) : The number of people (age 40 and over) is 10,298.
- Rank within US : This county is ranked 81 of 3143
Sierra County
- 2023 Rural-Urban Continuum Codes Φ : Rural
- Value (Percent) : The value is 70.9 percent.
- People (Age 40 And Over) : The number of people (age 40 and over) is 1,937.
- Rank within US : This county is ranked 14 of 3143
Notes:
Created by statecancerprofiles.cancer.gov on 07/14/2025 8:10 pm.
Φ Rural-Urban Continuum Codes provided by the USDA.
Source: Demographic data provided by the Census Bureau and the American Community Survey.
For more information about Population: Age 40 and over, see the dictionary.
Data for United States does not include Puerto Rico.