Data / Rankings / Median age / Counties in Pennsylvania

Counties in Pennsylvania by median age, 2024

Sullivan County had the highest median age of 67 counties in 2024, at 55.9 years. Centre County had the lowest, at 34.2 years. The median was 43.7 years and the figure for Pennsylvania was 40.9 years. Source: the U.S. Census Bureau.

Highest55.9Sullivan County
Lowest34.2Centre County
Median43.767 counties
Pennsylvania40.9History

Top 40 counties, 2024

CSVChart (SVG)

Sullivan CountySullivan County: 55.9 years55.9Cameron CountyCameron County: 53 years53Pike CountyPike County: 49.4 years49.4Wayne CountyWayne County: 49.2 years49.2Forest CountyForest County: 48.7 years48.7Susquehanna CountySusquehanna County: 48.6 years48.6Elk CountyElk County: 48.4 years48.4Potter CountyPotter County: 48.4 years48.4Venango CountyVenango County: 47.6 years47.6Bedford CountyBedford County: 47.5 years47.5Armstrong CountyArmstrong County: 47.2 years47.2Westmoreland CountyWestmoreland County: 47.2 years47.2Warren CountyWarren County: 47.1 years47.1Somerset CountySomerset County: 46.9 years46.9Carbon CountyCarbon County: 46.3 years46.3Fulton CountyFulton County: 46.1 years46.1Cambria CountyCambria County: 45.6 years45.6Clearfield CountyClearfield County: 45.4 years45.4Fayette CountyFayette County: 45.4 years45.4Mercer CountyMercer County: 45.1 years45.1Tioga CountyTioga County: 45.1 years45.1Wyoming CountyWyoming County: 45.1 years45.1Lawrence CountyLawrence County: 44.9 years44.9Beaver CountyBeaver County: 44.7 years44.7Northumberland CountyNorthumberland County: 44.5 years44.5Bucks CountyBucks County: 44.2 years44.2Washington CountyWashington County: 44.2 years44.2Monroe CountyMonroe County: 44.1 years44.1Crawford CountyCrawford County: 44 years44Huntingdon CountyHuntingdon County: 44 years44Jefferson CountyJefferson County: 44 years44McKean CountyMcKean County: 44 years44Perry CountyPerry County: 43.8 years43.8Adams CountyAdams County: 43.7 years43.7Schuylkill CountySchuylkill County: 43.7 years43.7Bradford CountyBradford County: 43.6 years43.6Butler CountyButler County: 43.4 years43.4Mifflin CountyMifflin County: 43.4 years43.4Greene CountyGreene County: 43.3 years43.3Juniata CountyJuniata County: 43.3 years43.3
years. Source: U.S. Census Bureau. Retrieved 2026-10-08.

Full ranking

RankCounties2024
years		Change on 2023
1Sullivan County55.9-0.2
2Cameron County53+0.5
3Pike County49.40
4Wayne County49.2+0.3
5Forest County48.7+0.1
6Susquehanna County48.60
7Elk County48.4-0.1
7Potter County48.4+0.2
9Venango County47.60
10Bedford County47.50
11Armstrong County47.20
11Westmoreland County47.2+0.1
13Warren County47.1-0.3
14Somerset County46.9-0.1
15Carbon County46.30
16Fulton County46.1+0.2
17Cambria County45.6-0.1
18Clearfield County45.4-0.2
18Fayette County45.40
20Mercer County45.1-0.1
20Tioga County45.1+0.1
20Wyoming County45.1-0.1
23Lawrence County44.90
24Beaver County44.70
25Northumberland County44.5+0.1
26Bucks County44.2+0.1
26Washington County44.20
28Monroe County44.1+0.2
29Crawford County44+0.1
29Huntingdon County44+0.5
29Jefferson County44+0.3
29McKean County44+0.2
33Perry County43.80
34Adams County43.7-0.1
34Schuylkill County43.7-0.2
36Bradford County43.6-0.1
37Butler County43.4+0.1
37Mifflin County43.4+0.3
39Greene County43.3+0.3
39Juniata County43.3+0.2
41Blair County43.1+0.2
42Montour County42.9-0.1
43Franklin County42.1-0.1
44Luzerne County42-0.1
44Northampton County420
46Lackawanna County41.90
47Clarion County41.7+0.1
48Lycoming County41.4+0.1
49Montgomery County41.2+0.1
50Lebanon County41.1-0.2
50York County41.1+0.2
52Columbia County41-0.4
52Union County41+0.5
54Chester County40.8+0.1
55Allegheny County40.60
55Snyder County40.6+0.1
57Cumberland County40.2-0.1
57Erie County40.2+0.1
59Indiana County40+0.5
60Berks County39.90
61Clinton County39.80
62Lehigh County39.6+0.3
63Dauphin County39.40
63Lancaster County39.4+0.3
65Delaware County39.1+0.1
66Philadelphia County35.3+0.2
67Centre County34.2+0.4

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/2024/table-based-SF/data/5YRData/acsdt5y2024-b01002.dat. Retrieved 2026-10-08.

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Questions

Which county has the highest median age?

Sullivan County, with 55.9 years in 2024, according to the U.S. Census Bureau.

Which county has the lowest median age?

Centre County, with 34.2 years in 2024.

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 Pennsylvania: more rankings