ZIP Codes of Jefferson County, PA

Population & People
Population & People
Total Population
44,879
Household Income
Household Income
Median Income
$65,956
Housing
Housing
Total Housing Units
22,740
Business & Economy
Business & Economy
Total Businesses
1,115
Employment
Employment
Employment Rate
55.30%
Education
Education
Bachelor's Degree+
18.35%
Source: U.S. Census ACS 2024 5-Year Estimates · rolled up across the 23 ZIPs in this county.
Data Last Updated: June 1, 2026
ZIP Codes:23 ZIP Codes (18 Standard, 5 PO Box, 0 Unique) [See All]
Area Codes:582 / 724 / 814
Timezone:Eastern (GMT -05:00)
Local Time:2:13:31 PM
Population:44,879 [See All]
FIPS:42065
Land Area:725 sq mi
Water Area:4 sq mi
Coordinates:41.0540, -79.0177
Quick Link:
https://www.zip-codes.com/county/pa-jefferson.asp
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Extreme geographic sprawl
The largest ZIP spans 1103× the smallest by area — 159.7 sq mi down to 0.14.

Standout ZIPs in this County


Most Populous
Punxsutawney · 13,918 people
31.0% of county total
Highest Income
Timblin · $72,500 median
1.1× county average
Largest Land Area
Punxsutawney · 159.7 sq mi
Spans the most ground
Fastest Growth
Sigel · 15.2% (10-yr)
1,007 → 1,160 residents
Most Educated
Falls Creek · 23.6% bachelor's+
319 of 1,349 adults 25+

Things worth knowing about Jefferson County


44,879 residents live across 23 ZIPs covering 725 sq mi, served by 23 distinct USPS-recognized cities.

Population moved from 45,978 to 44,879 from 2014 to 2024 — a -2.4% change. 8 ZIPs gained residents, 15 lost.

The county's wealthiest ZIP 15778 (Timblin, $72,500 median) and poorest ZIP 15865 (Sykesville, $45,313) are 20.0 miles apart — a 1.6× income gap across local geography.

Median home values vary 2.2× across this county — from $71,300 in 15778 (Timblin) to $158,700 in 15825 (Brookville).

Density varies 84× across the county — from 9 people/sq mi in 15860 (Sigel) to 724 in 15715 (Big Run).

Educational attainment ranges from 9.3% bachelor's+ in 15715 (Big Run) to 24.4% in 15829 (Corsica) — the breadth of educational profiles across the area.

Within Pennsylvania, this is the #47 most populous of 67 counties and ranks #47 for median household income .

Weighted by population, the typical household earns about $59,255 across the county — reflecting what a typical resident sees, not a simple ZIP average.

18.3% of adults age 25+ hold a bachelor's degree or higher (5,863 of 31,959 reporting).

18 Standard delivery, 5 PO Box only, 0 single-entity Unique ZIPs serve this county.

Stories about Jefferson County


Big & sparse

A frontier county — vast land area with only a few residents per square mile. Daily life looks very different here than in the country's denser counties.

Total area
725
square miles
Avg density
61.9
people per sq mi
Population
44,879
across 23 ZIPs
Punxsutawney
159.7 sq mi
13,918 residents
Brookville
156.4 sq mi
9,426 residents
Sigel
134.3 sq mi
1,160 residents

All ZIP Codes in Jefferson County


ZIPCityTypePopulationMedian IncomeArea (sq mi)10-yr Growth
15767PunxsutawneyStandard13,918$50,589159.7-4.2%
15825BrookvilleStandard9,426$64,130156.4-2.6%
15851ReynoldsvilleStandard7,059$63,15896.69.1%
15824BrockwayStandard5,115$64,62367.8-1.9%
15840Falls CreekStandard1,928$57,34418.8-2.7%
15864SummervilleStandard1,789$65,85937.94.0%
15829CorsicaStandard1,233$64,16732.3-6.9%
15860SigelStandard1,160$65,774134.315.2%
15865SykesvilleStandard923$45,3132.5-37.3%
15715Big RunPO Box505$60,6250.7-19.2%
15778TimblinStandard367$72,5001.1160.3%
15711AnitaStandard322$47,0831.1-23.9%
15770RinggoldStandard188$43,2501.55.6%
15764OliveburgStandard178$66,2501.850.8%
15863Stump CreekPO Box1590.5-20.9%
15730CoolspringStandard142$66,6962.5111.9%
15780ValierStandard120$89,5830.8-20.5%
15781WalstonPO Box89$53,0001.571.2%
15733De LanceyPO Box710.4-46.6%
15847Knox DalePO Box65$125,1391.2-67.7%
15784WorthvilleStandard49$82,5001.6-29.0%
15744HamiltonStandard44$111,8750.1-71.1%
15776Sprankle MillsStandard29$25,6253.5-56.1%

Adjacent & Nearby Counties