Jefferson County, Pennsylvania
County seat: Brookville · Population 43,255 (2025) · 653 sq mi
Jefferson County is the 48th most populous of Pennsylvania's 67 counties, with 43,255 people (2025 estimate). Its county seat is Brookville. It is part of the District 10 region, one of the 11 PennDOT engineering districts. The map shows its 11 cities and towns and the 6 neighboring counties.
Jefferson County facts
- County seat
- Brookville
- Population (2025 estimate)
- 43,255 −2.8% since 2020
- Land area
- 653 sq mi 35th largest of 67
- Water area
- 4 sq mi
- Population density
- 66 per sq mi
- Established
- 1804
- Same name
- One of 25 Jefferson Counties in the US
- Named after
- Thomas Jefferson Founding Father, U.S. president from 1801 to 1809 (1743–1826)
- Largest city
- Punxsutawney 5,558
- Median household income
- $58,686
- Cities and towns
- 11 plus 1 CDPs
- ZIP codes
- 30
- Time zone
- Eastern
- FIPS code
- 42065
Cities and towns in Jefferson County
Jefferson County has 11 incorporated cities, towns and villages. Populations count the people living inside Jefferson County; cities that cross a county line also list the other counties.
| Name | Type | Population 2025 | Also in |
|---|---|---|---|
| Punxsutawney | Borough | 5,558 | |
| Brookville (county seat) | Borough | 3,883 | |
| Reynoldsville | Borough | 2,473 | |
| Brockway | Borough | 2,213 | |
| Sykesville | Borough | 1,078 | |
| Falls Creek | Borough | 963 | Clearfield County |
| Big Run | Borough | 622 | |
| Summerville | Borough | 496 | |
| Corsica | Borough | 312 | |
| Timblin | Borough | 140 | |
| Worthville | Borough | 72 |
Unincorporated communities (CDPs)
Census-designated places are communities without their own city government; the county provides their services.
| Community | Population | Also in |
|---|---|---|
| Crenshaw | 280 |
ZIP codes in Jefferson County
30 ZIP codes reach into Jefferson County. ZIP codes ignore county lines, so some also cover a neighboring county.
- 15711
- 15715
- 15730
- 15733
- 15744
- 15764
- 15767 also Indiana and Clearfield counties
- 15770
- 15772 also Indiana County
- 15776
- 15778
- 15780
- 15781
- 15784
- 15801 also Clearfield County
- 15823 also Elk County
- 15824 also Clearfield County
- 15825
- 15828 also Forest County
- 15829 also Clarion County
- 15840 also Clearfield County
- 15847
- 15851
- 15853 also Elk County
- 15860 also Elk and Clarion counties
- 15863
- 15864 also Clarion County
- 15865 also Clearfield County
- 16222 also Armstrong and Indiana counties
- 16240 also Armstrong and Clarion counties
Population of Jefferson County, 2020–2025
Jefferson County shrank by 1,246 people (−2.8%) between April 2020 and July 2025: 945 more deaths than births and a net loss of 301 people from migration.
| Year (July 1) | Population |
|---|---|
| 2020 | 44,488 |
| 2021 | 44,132 |
| 2022 | 43,731 |
| 2023 | 43,637 |
| 2024 | 43,340 |
| 2025 | 43,255 |
Neighboring counties
- Elk County northeast · 29,926 people
- Clearfield County east · 78,100 people
- Indiana County south · 82,878 people
- Clarion County west · 36,680 people
- Forest County northwest · 6,614 people
- Armstrong County southwest · 63,698 people
Printable Jefferson County map
The PDF is a vector file with real text: it prints sharp on Letter paper and you can search it for a town. The PNG is 2400 pixels wide for slides and documents. Both are free to use with a credit to WhichCounty.
- PDF (Letter) (87 KB)
- PNG (2400 px) (85 KB)
Paste this code to embed the map on your site:
Sources
- Boundaries: U.S. Census Bureau, 2025 Cartographic Boundary Files (1:500,000).
- Population: Census Bureau county and city estimates, Vintage 2025. CDP populations: American Community Survey 2020–2024.
- Places and ZIP codes: Census Bureau 2026 Gazetteer and 2020 ZIP Code Tabulation Area relationship files.
- County seat, founding year and name origin: Wikidata (CC0), checked against state sources.
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