Median Age in Montgomery County, MD
ACS 2024 5-Year Estimates
40.2 years
Rank #2,058/3,222 · #13 in MD
36th
Montgomery 40.2 years
MD 39.4 years +2.0%
US 38.9 years +3.3%
Median Age Trend
Rankings →Percentile Rank Over Time
Year-over-Year Age Change
National Distribution
How Montgomery County's median age of 40.2 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 Montgomery County for median age.
Nearby Rankings
Full ranking →| #2,055 | Gibson County, IN | 40.2 years |
| #2,056 | Cloud County, KS | 40.2 years |
| #2,057 | Clay County, KY | 40.2 years |
| #2,058 | Montgomery County, MD | 40.2 years |
| #2,059 | Worcester County, MA | 40.2 years |
| #2,060 | Calhoun County, MI | 40.2 years |
| #2,061 | Isanti County, MN | 40.2 years |
About Median Age
Montgomery County, Maryland has a median age of 40.2 years, ranking #2,058 of 3,222 counties nationwide — 3.3% above the national value of 38.9 years. Within Maryland, it ranks #13 of 24. This places it in the 36th 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.