Data / Rankings / Median age / Counties in Pennsylvania

Counties in Pennsylvania by median age

Sullivan County had the highest median age of 67 counties in 2023, at 56.1 years. Centre County had the lowest, at 33.8 years. The median was 43.7 years and the figure for Pennsylvania was 40.9 years. Source: the U.S. Census Bureau.

Highest56.1Sullivan County
Lowest33.8Centre County
Median43.767 counties
Pennsylvania40.9History

Top 40 counties, 2023

CSVChart (SVG)

Sullivan CountySullivan County: 56.1 years56.1Cameron CountyCameron County: 52.5 years52.5Pike CountyPike County: 49.4 years49.4Wayne CountyWayne County: 48.9 years48.9Forest CountyForest County: 48.6 years48.6Susquehanna CountySusquehanna County: 48.6 years48.6Elk CountyElk County: 48.5 years48.5Potter CountyPotter County: 48.2 years48.2Venango CountyVenango County: 47.6 years47.6Bedford CountyBedford County: 47.5 years47.5Warren CountyWarren County: 47.4 years47.4Armstrong CountyArmstrong County: 47.2 years47.2Westmoreland CountyWestmoreland County: 47.1 years47.1Somerset CountySomerset County: 47 years47Carbon CountyCarbon County: 46.3 years46.3Fulton CountyFulton County: 45.9 years45.9Cambria CountyCambria County: 45.7 years45.7Clearfield CountyClearfield County: 45.6 years45.6Fayette CountyFayette County: 45.4 years45.4Mercer CountyMercer County: 45.2 years45.2Wyoming CountyWyoming County: 45.2 years45.2Tioga CountyTioga County: 45 years45Lawrence CountyLawrence County: 44.9 years44.9Beaver CountyBeaver County: 44.7 years44.7Northumberland CountyNorthumberland County: 44.4 years44.4Washington CountyWashington County: 44.2 years44.2Bucks CountyBucks County: 44.1 years44.1Crawford CountyCrawford County: 43.9 years43.9Monroe CountyMonroe County: 43.9 years43.9Schuylkill CountySchuylkill County: 43.9 years43.9Adams CountyAdams County: 43.8 years43.8McKean CountyMcKean County: 43.8 years43.8Perry CountyPerry County: 43.8 years43.8Bradford CountyBradford County: 43.7 years43.7Jefferson CountyJefferson County: 43.7 years43.7Huntingdon CountyHuntingdon County: 43.5 years43.5Butler CountyButler County: 43.3 years43.3Juniata CountyJuniata County: 43.1 years43.1Mifflin CountyMifflin County: 43.1 years43.1Greene CountyGreene County: 43 years43
years. Source: U.S. Census Bureau. Retrieved 2026-10-08.

Full ranking

RankCounties2023
years		Change on 2022
1Sullivan County56.1+1.1
2Cameron County52.5+0.7
3Pike County49.4+0.5
4Wayne County48.9+0.1
5Forest County48.6+2.4
5Susquehanna County48.6+0.1
7Elk County48.5+0.3
8Potter County48.2+0.1
9Venango County47.60
10Bedford County47.5+0.2
11Warren County47.40
12Armstrong County47.2+0.2
13Westmoreland County47.1-0.1
14Somerset County47+0.3
15Carbon County46.30
16Fulton County45.9+0.2
17Cambria County45.7+0.1
18Clearfield County45.6+0.4
19Fayette County45.4+0.2
20Mercer County45.2+0.2
20Wyoming County45.2-0.1
22Tioga County450
23Lawrence County44.9-0.1
24Beaver County44.7-0.2
25Northumberland County44.4-0.1
26Washington County44.20
27Bucks County44.1+0.1
28Crawford County43.9+0.3
28Monroe County43.9+0.4
28Schuylkill County43.9-0.3
31Adams County43.80
31McKean County43.80
31Perry County43.8+0.1
34Bradford County43.7-0.2
34Jefferson County43.70
36Huntingdon County43.5-0.1
37Butler County43.3-0.1
38Juniata County43.1+0.4
38Mifflin County43.1-0.2
40Greene County43-0.1
40Montour County43-0.2
42Blair County42.90
43Franklin County42.20
44Luzerne County42.1-0.1
45Northampton County42+0.1
46Lackawanna County41.90
47Clarion County41.6+0.1
48Columbia County41.4+0.1
49Lebanon County41.30
49Lycoming County41.3-0.1
51Montgomery County41.1-0.1
52York County40.9-0.1
53Chester County40.70
54Allegheny County40.60
55Snyder County40.5+0.5
55Union County40.5+0.8
57Cumberland County40.30
58Erie County40.1+0.2
59Berks County39.90
60Clinton County39.80
61Indiana County39.5-0.1
62Dauphin County39.40
63Lehigh County39.3+0.4
64Lancaster County39.1+0.1
65Delaware County390
66Philadelphia County35.1+0.3
67Centre County33.8+0.5

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/2023/table-based-SF/data/5YRData/acsdt5y2023-b01002.dat. Retrieved 2026-10-08.

Use this data in your AI agent

Invokely serves this figure to AI assistants through MCP and to code through a REST API, with the source and citation attached. Ask your assistant:

Rank Counties in Pennsylvania by median age using official data, and cite the source.
rank_places {"indicator":"median_age","level":"province","within":"Pennsylvania","limit":10}
GET https://invokely.ai/api/v1/rank?indicator=median_age&level=province&within=Pennsylvania&limit=10

Connect Claude, ChatGPT or Cursor in one step. The trial answers 25 calls a day without an account.

Questions

Which county has the highest median age?

Sullivan County, with 56.1 years in 2023, according to the U.S. Census Bureau.

Which county has the lowest median age?

Centre County, with 33.8 years in 2023.

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