Interpretation of Demographics Data
Demographic Data Report for California by County
Population: Age 18-39
All Races (includes Hispanic), Both Sexes
2019-2023 American Community Survey 5-Year Data
Sorted by Value
California
- 2023 Rural-Urban Continuum Codes Φ : N/A
- Value (Percent) : The value is 31.1 percent.
- People (Age 18-39) : The number of people (age 18-39) is 12,197,308.
- Rank within US : This state is ranked 7 of 52
United States
- 2023 Rural-Urban Continuum Codes Φ : N/A
- Value (Percent) : The value is 29.5 percent.
- People (Age 18-39) : The number of people (age 18-39) is 98,058,393.
- Rank within US : N/A
Yolo County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 39.5 percent.
- People (Age 18-39) : The number of people (age 18-39) is 85,998.
- Rank within US : This county is ranked 67 of 3143
San Francisco County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 36.8 percent.
- People (Age 18-39) : The number of people (age 18-39) is 307,797.
- Rank within US : This county is ranked 99 of 3143
Kings County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 35.0 percent.
- People (Age 18-39) : The number of people (age 18-39) is 53,520.
- Rank within US : This county is ranked 156 of 3143
Lassen County
- 2023 Rural-Urban Continuum Codes Φ : Rural
- Value (Percent) : The value is 34.7 percent.
- People (Age 18-39) : The number of people (age 18-39) is 10,819.
- Rank within US : This county is ranked 170 of 3143
Butte County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 34.0 percent.
- People (Age 18-39) : The number of people (age 18-39) is 71,148.
- Rank within US : This county is ranked 190 of 3143
Santa Barbara County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 33.9 percent.
- People (Age 18-39) : The number of people (age 18-39) is 150,471.
- Rank within US : This county is ranked 196 of 3143
San Diego County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 33.1 percent.
- People (Age 18-39) : The number of people (age 18-39) is 1,087,181.
- Rank within US : This county is ranked 230 of 3143
Yuba County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 32.6 percent.
- People (Age 18-39) : The number of people (age 18-39) is 27,125.
- Rank within US : This county is ranked 250 of 3143
Santa Clara County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 32.3 percent.
- People (Age 18-39) : The number of people (age 18-39) is 614,106.
- Rank within US : This county is ranked 265 of 3143
San Luis Obispo County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 32.2 percent.
- People (Age 18-39) : The number of people (age 18-39) is 90,637.
- Rank within US : This county is ranked 276 of 3143
Merced County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 32.1 percent.
- People (Age 18-39) : The number of people (age 18-39) is 91,698.
- Rank within US : This county is ranked 281 of 3143
Alameda County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 32.0 percent.
- People (Age 18-39) : The number of people (age 18-39) is 528,045.
- Rank within US : This county is ranked 292 of 3143
Los Angeles County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 32.0 percent.
- People (Age 18-39) : The number of people (age 18-39) is 3,156,229.
- Rank within US : This county is ranked 292 of 3143
San Bernardino County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 31.9 percent.
- People (Age 18-39) : The number of people (age 18-39) is 698,760.
- Rank within US : This county is ranked 297 of 3143
Kern County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 31.8 percent.
- People (Age 18-39) : The number of people (age 18-39) is 289,860.
- Rank within US : This county is ranked 303 of 3143
Humboldt County
- 2023 Rural-Urban Continuum Codes Φ : Rural
- Value (Percent) : The value is 31.7 percent.
- People (Age 18-39) : The number of people (age 18-39) is 42,890.
- Rank within US : This county is ranked 310 of 3143
Santa Cruz County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 31.7 percent.
- People (Age 18-39) : The number of people (age 18-39) is 84,269.
- Rank within US : This county is ranked 310 of 3143
Fresno County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 31.6 percent.
- People (Age 18-39) : The number of people (age 18-39) is 320,218.
- Rank within US : This county is ranked 317 of 3143
San Benito County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 31.1 percent.
- People (Age 18-39) : The number of people (age 18-39) is 20,565.
- Rank within US : This county is ranked 361 of 3143
Sacramento County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 31.0 percent.
- People (Age 18-39) : The number of people (age 18-39) is 491,336.
- Rank within US : This county is ranked 369 of 3143
Tulare County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 31.0 percent.
- People (Age 18-39) : The number of people (age 18-39) is 147,509.
- Rank within US : This county is ranked 369 of 3143
Imperial County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 30.9 percent.
- People (Age 18-39) : The number of people (age 18-39) is 55,457.
- Rank within US : This county is ranked 376 of 3143
Mono County
- 2023 Rural-Urban Continuum Codes Φ : Rural
- Value (Percent) : The value is 30.9 percent.
- People (Age 18-39) : The number of people (age 18-39) is 4,070.
- Rank within US : This county is ranked 376 of 3143
Stanislaus County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 30.3 percent.
- People (Age 18-39) : The number of people (age 18-39) is 167,562.
- Rank within US : This county is ranked 440 of 3143
Monterey County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 30.1 percent.
- People (Age 18-39) : The number of people (age 18-39) is 131,085.
- Rank within US : This county is ranked 470 of 3143
San Joaquin County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 30.1 percent.
- People (Age 18-39) : The number of people (age 18-39) is 237,311.
- Rank within US : This county is ranked 470 of 3143
Riverside County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 29.9 percent.
- People (Age 18-39) : The number of people (age 18-39) is 733,482.
- Rank within US : This county is ranked 500 of 3143
Orange County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 29.8 percent.
- People (Age 18-39) : The number of people (age 18-39) is 944,371.
- Rank within US : This county is ranked 512 of 3143
Madera County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 29.6 percent.
- People (Age 18-39) : The number of people (age 18-39) is 47,031.
- Rank within US : This county is ranked 549 of 3143
San Mateo County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 29.3 percent.
- People (Age 18-39) : The number of people (age 18-39) is 217,956.
- Rank within US : This county is ranked 602 of 3143
Solano County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 29.3 percent.
- People (Age 18-39) : The number of people (age 18-39) is 132,209.
- Rank within US : This county is ranked 602 of 3143
Sutter County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 29.0 percent.
- People (Age 18-39) : The number of people (age 18-39) is 28,684.
- Rank within US : This county is ranked 662 of 3143
Ventura County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 28.6 percent.
- People (Age 18-39) : The number of people (age 18-39) is 239,337.
- Rank within US : This county is ranked 738 of 3143
Del Norte County
- 2023 Rural-Urban Continuum Codes Φ : Rural
- Value (Percent) : The value is 28.2 percent.
- People (Age 18-39) : The number of people (age 18-39) is 7,692.
- Rank within US : This county is ranked 813 of 3143
Glenn County
- 2023 Rural-Urban Continuum Codes Φ : Rural
- Value (Percent) : The value is 28.2 percent.
- People (Age 18-39) : The number of people (age 18-39) is 8,064.
- Rank within US : This county is ranked 813 of 3143
Colusa County
- 2023 Rural-Urban Continuum Codes Φ : Rural
- Value (Percent) : The value is 27.3 percent.
- People (Age 18-39) : The number of people (age 18-39) is 5,982.
- Rank within US : This county is ranked 1035 of 3143
Contra Costa County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 27.3 percent.
- People (Age 18-39) : The number of people (age 18-39) is 317,063.
- Rank within US : This county is ranked 1035 of 3143
Napa County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 26.9 percent.
- People (Age 18-39) : The number of people (age 18-39) is 36,622.
- Rank within US : This county is ranked 1143 of 3143
Sonoma County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 26.8 percent.
- People (Age 18-39) : The number of people (age 18-39) is 130,184.
- Rank within US : This county is ranked 1180 of 3143
Alpine County
- 2023 Rural-Urban Continuum Codes Φ : Rural
- Value (Percent) : The value is 26.3 percent.
- People (Age 18-39) : The number of people (age 18-39) is 446.
- Rank within US : This county is ranked 1356 of 3143
Shasta County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 25.9 percent.
- People (Age 18-39) : The number of people (age 18-39) is 47,013.
- Rank within US : This county is ranked 1514 of 3143
Tehama County
- 2023 Rural-Urban Continuum Codes Φ : Rural
- Value (Percent) : The value is 25.7 percent.
- People (Age 18-39) : The number of people (age 18-39) is 16,858.
- Rank within US : This county is ranked 1585 of 3143
Placer County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 24.6 percent.
- People (Age 18-39) : The number of people (age 18-39) is 101,371.
- Rank within US : This county is ranked 1991 of 3143
Mendocino County
- 2023 Rural-Urban Continuum Codes Φ : Rural
- Value (Percent) : The value is 24.4 percent.
- People (Age 18-39) : The number of people (age 18-39) is 22,098.
- Rank within US : This county is ranked 2056 of 3143
Amador County
- 2023 Rural-Urban Continuum Codes Φ : Rural
- Value (Percent) : The value is 23.6 percent.
- People (Age 18-39) : The number of people (age 18-39) is 9,673.
- Rank within US : This county is ranked 2294 of 3143
Tuolumne County
- 2023 Rural-Urban Continuum Codes Φ : Rural
- Value (Percent) : The value is 23.4 percent.
- People (Age 18-39) : The number of people (age 18-39) is 12,850.
- Rank within US : This county is ranked 2359 of 3143
Lake County
- 2023 Rural-Urban Continuum Codes Φ : Rural
- Value (Percent) : The value is 23.3 percent.
- People (Age 18-39) : The number of people (age 18-39) is 15,865.
- Rank within US : This county is ranked 2387 of 3143
El Dorado County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 23.2 percent.
- People (Age 18-39) : The number of people (age 18-39) is 44,529.
- Rank within US : This county is ranked 2414 of 3143
Modoc County
- 2023 Rural-Urban Continuum Codes Φ : Rural
- Value (Percent) : The value is 22.3 percent.
- People (Age 18-39) : The number of people (age 18-39) is 1,926.
- Rank within US : This county is ranked 2639 of 3143
Inyo County
- 2023 Rural-Urban Continuum Codes Φ : Rural
- Value (Percent) : The value is 22.2 percent.
- People (Age 18-39) : The number of people (age 18-39) is 4,166.
- Rank within US : This county is ranked 2663 of 3143
Siskiyou County
- 2023 Rural-Urban Continuum Codes Φ : Rural
- Value (Percent) : The value is 21.9 percent.
- People (Age 18-39) : The number of people (age 18-39) is 9,620.
- Rank within US : This county is ranked 2718 of 3143
Nevada County
- 2023 Rural-Urban Continuum Codes Φ : Rural
- Value (Percent) : The value is 21.7 percent.
- People (Age 18-39) : The number of people (age 18-39) is 22,265.
- Rank within US : This county is ranked 2751 of 3143
Plumas County
- 2023 Rural-Urban Continuum Codes Φ : Rural
- Value (Percent) : The value is 21.5 percent.
- People (Age 18-39) : The number of people (age 18-39) is 4,212.
- Rank within US : This county is ranked 2780 of 3143
Calaveras County
- 2023 Rural-Urban Continuum Codes Φ : Rural
- Value (Percent) : The value is 21.0 percent.
- People (Age 18-39) : The number of people (age 18-39) is 9,668.
- Rank within US : This county is ranked 2857 of 3143
Marin County
- 2023 Rural-Urban Continuum Codes Φ : Urban
- Value (Percent) : The value is 20.8 percent.
- People (Age 18-39) : The number of people (age 18-39) is 53,859.
- Rank within US : This county is ranked 2882 of 3143
Mariposa County
- 2023 Rural-Urban Continuum Codes Φ : Rural
- Value (Percent) : The value is 20.1 percent.
- People (Age 18-39) : The number of people (age 18-39) is 3,425.
- Rank within US : This county is ranked 2954 of 3143
Trinity County
- 2023 Rural-Urban Continuum Codes Φ : Rural
- Value (Percent) : The value is 16.8 percent.
- People (Age 18-39) : The number of people (age 18-39) is 2,676.
- Rank within US : This county is ranked 3099 of 3143
Sierra County
- 2023 Rural-Urban Continuum Codes Φ : Rural
- Value (Percent) : The value is 16.3 percent.
- People (Age 18-39) : The number of people (age 18-39) is 445.
- Rank within US : This county is ranked 3116 of 3143
Notes:
Created by statecancerprofiles.cancer.gov on 05/24/2025 1:30 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 18-39, see the dictionary.
Data for United States does not include Puerto Rico.