Median Age in San Francisco County, CA
ACS 2024 5-Year Estimates
40.0 years
Rank #2,108/3,222 · #24 in CA
35th
San Francisco 40.0 years
CA 37.9 years +5.5%
US 38.9 years +2.8%
Median Age Trend
Rankings →Percentile Rank Over Time
Year-over-Year Age Change
National Distribution
How San Francisco County's median age of 40.0 years compares to all 3,222 U.S. counties. Values range from 21.4 years to 86.2 years.
Distribution of Median Age Across All Counties
Ranking Context
Counties ranked closest to San Francisco County for median age.
Nearby Rankings
Full ranking →| #2,105 | Morgan County, AL | 40.0 years |
| #2,106 | Juneau City and Borough, AK | 40.0 years |
| #2,107 | Poinsett County, AR | 40.0 years |
| #2,108 | San Francisco County, CA | 40.0 years |
| #2,109 | Tehama County, CA | 40.0 years |
| #2,110 | Capitol Planning Region, CT | 40.0 years |
| #2,111 | Walton County, GA | 40.0 years |
About Median Age
San Francisco County, California has a median age of 40.0 years, ranking #2,108 of 3,222 counties nationwide — 2.8% above the national value of 38.9 years. Within California, it ranks #24 of 58. This places it in the 35th percentile nationally.
The median age of the total population. Source: U.S. Census Bureau, American Community Survey 2024 5-Year Estimates. All values are estimates derived from survey samples and are subject to margin of error. For more information, see our methodology.