# Counties in Massachusetts by median age, 2024

All 14 values come from U.S. Census Bureau for 2024, so the places are comparable.

- Indicator id: `median_age`
- Unit: years
- Definition: Age that divides the resident population into two halves of equal size. Spain and the EU: on 1 January. United States: American Community Survey five-year estimate, where the period shown is the last year of the five-year span.
- Source: U.S. Census Bureau, American Community Survey 5-year estimates, table B01002: median age, total population (https://www2.census.gov/programs-surveys/acs/summary_file/2024/table-based-SF/data/5YRData/acsdt5y2024-b01002.dat)
- Retrieved: 2026-10-08
- Citation: U.S. Census Bureau. American Community Survey 5-year estimates, table B01002: median age, total population. https://www2.census.gov/programs-surveys/acs/summary_file/2024/table-based-SF/data/5YRData/acsdt5y2024-b01002.dat. Retrieved 2026-10-08.
- Web page: https://invokely.ai/rankings/median-age/massachusetts-counties
- CSV: https://invokely.ai/download/rankings/median-age/massachusetts-counties.csv

| Rank | Place | years |
|---:|---|---:|
| 1 | Barnstable County | 55.4 |
| 2 | Dukes County | 50.7 |
| 3 | Berkshire County | 47.3 |
| 4 | Franklin County | 47.2 |
| 5 | Plymouth County | 43 |
| 6 | Nantucket County | 42.4 |
| 7 | Essex County | 41.2 |
| 8 | Bristol County | 40.9 |
| 8 | Norfolk County | 40.9 |
| 10 | Worcester County | 40.2 |
| 11 | Hampden County | 40 |
| 12 | Middlesex County | 38.9 |
| 13 | Hampshire County | 37.4 |
| 14 | Suffolk County | 33.9 |