Median Age in Jefferson County, WA
ACS 2024 5-Year Estimates
59.8 years
Rank #11/3,222 · #1 in WA
100th
Jefferson 59.8 years
WA 38.3 years +56.1%
US 38.9 years +53.7%
Median Age Trend
Rankings →Percentile Rank Over Time
Year-over-Year Age Change
National Distribution
How Jefferson County's median age of 59.8 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 Jefferson County for median age.
Nearby Rankings
Full ranking →| #8 | Charlotte County, FL | 59.9 years |
| #9 | Terrell County, TX | 59.9 years |
| #10 | Ontonagon County, MI | 59.8 years |
| #11 | Jefferson County, WA | 59.8 years |
| #12 | McCormick County, SC | 59.5 years |
| #13 | Menard County, TX | 59.5 years |
| #14 | Real County, TX | 59.5 years |
About Median Age
Jefferson County, Washington has a median age of 59.8 years, ranking #11 of 3,222 counties nationwide — 53.7% above the national value of 38.9 years. Within Washington, it ranks #1 of 39. This places it in the 100th 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.