How California Compares

California

37.9 years

National

38.9 years

2.6% below

State Ranking

Rank	State	Value
#38	Indiana	38.1 years
#39	Louisiana	38.0 years
#40	South Dakota	38.0 years
#41	California	37.9 years
#42	Colorado	37.7 years
#43	Georgia	37.6 years
#44	Kansas	37.4 years

View full state ranking →

Highest Age Counties in California

#	County	Age
1	Trinity County	54.9 years
2	Sierra County	54.7 years
3	Calaveras County	52.0 years
4	Plumas County	52.0 years
5	Mariposa County	51.2 years
6	Nevada County	50.1 years
7	Amador County	49.7 years
8	Tuolumne County	48.4 years
9	Modoc County	47.5 years
10	Marin County	47.4 years

Lowest Age Counties in California

#	County	Age
58	Merced County	31.8 years
57	Yolo County	32.1 years
56	Tulare County	32.1 years
55	Kings County	32.5 years
54	Kern County	32.7 years
53	Imperial County	33.2 years
52	Fresno County	33.5 years
51	Yuba County	34.2 years
50	Santa Barbara County	34.6 years
49	Madera County	34.6 years

Median Age in California

California has a median age of 37.9 years, ranking #41 of 52 among all 52 states and territories. This is 2.6% below the national value of 38.9 years.

Across California's 58 counties, median age ranges from 31.8 years to 54.9 years. The county with the highest value is Trinity County at 54.9 years.

The median age of the total population.

About this data

Source: U.S. Census Bureau, American Community Survey 5-Year Estimates (2024). All values are estimates derived from survey samples and are subject to margin of error. For more information, see our methodology.