Data / Rankings / Median age / Counties in Maine

Counties in Maine by median age

Lincoln County had the highest median age of 16 counties in 2022, at 51.3 years. Androscoggin County had the lowest, at 40.8 years. The median was 47 years and the figure for Maine was 44.8 years. Source: the U.S. Census Bureau.

Highest51.3Lincoln County
Lowest40.8Androscoggin County
Median4716 counties
Maine44.8History

All counties, 2022

CSVChart (SVG)

Lincoln CountyLincoln County: 51.3 years51.3Piscataquis CountyPiscataquis County: 51.2 years51.2Knox CountyKnox County: 49 years49Hancock CountyHancock County: 48.9 years48.9Washington CountyWashington County: 48.6 years48.6Aroostook CountyAroostook County: 48.5 years48.5Oxford CountyOxford County: 48.2 years48.2Somerset CountySomerset County: 47 years47Waldo CountyWaldo County: 47 years47Sagadahoc CountySagadahoc County: 46.7 years46.7Franklin CountyFranklin County: 46.3 years46.3York CountyYork County: 45.2 years45.2Kennebec CountyKennebec County: 44.3 years44.3Penobscot CountyPenobscot County: 42.4 years42.4Cumberland CountyCumberland County: 42.1 years42.1Androscoggin CountyAndroscoggin County: 40.8 years40.8
years. Source: U.S. Census Bureau. Retrieved 2026-10-08.

Full ranking

RankCounties2022
years		Change on 2021
1Lincoln County51.30
2Piscataquis County51.2-0.1
3Knox County49+0.3
4Hancock County48.9-0.3
5Washington County48.6+0.2
6Aroostook County48.5+0.6
7Oxford County48.2+0.6
8Somerset County47+0.1
8Waldo County47+0.5
10Sagadahoc County46.7-0.1
11Franklin County46.30
12York County45.2-0.2
13Kennebec County44.3+0.2
14Penobscot County42.4+0.3
15Cumberland County42.1+0.2
16Androscoggin County40.8+0.1

Other periods

About this ranking

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.

Every value in the ranking comes from the same publisher and the same period, so the counties are compared on one definition. Equal values share a rank.

How to cite

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/2022/table-based-SF/data/5YRData/acsdt5y2022-b01002.dat. Retrieved 2026-10-08.

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Questions

Which county has the highest median age?

Lincoln County, with 51.3 years in 2022, according to the U.S. Census Bureau.

Which county has the lowest median age?

Androscoggin County, with 40.8 years in 2022.

Where does this ranking come from?

Every value comes from one source and one period, so the places are comparable: U.S. Census Bureau, American Community Survey 5-year estimates, table B01002: median age, total population. Retrieved 2026-10-08.

Median age: other rankings

Counties in Maine: more rankings