Median Age in New Castle County, DE
ACS 2024 5-Year Estimates
How New Castle County Compares
National Distribution
Where New Castle County falls among all 3,222 U.S. counties for median age.
■ New Castle County: 39.3 years
Ranking Context
| Rank | County | Value |
|---|---|---|
| #2,304 | Calhoun County, AL | 39.3 years |
| #2,305 | Miller County, AR | 39.3 years |
| #2,306 | Yell County, AR | 39.3 years |
| #2,307 | New Castle County, DE | 39.3 years |
| #2,308 | Rockdale County, GA | 39.3 years |
| #2,309 | Campbell County, KY | 39.3 years |
| #2,310 | Powell County, KY | 39.3 years |
Median Age in New Castle County, Delaware
New Castle County, Delaware has a median age of 39.3 years, which ranks #2,307 of 3,222 out of 3,222 counties nationwide. This is 1.0% above the national value of 38.9 years.
Within Delaware, New Castle County ranks #2 of 3 out of 3 counties. This places it in the 28th percentile nationally.
The median age of the total population. All data comes from the U.S. Census Bureau's American Community Survey (ACS) 5-Year Estimates for 2024.
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.