Jefferson County, Pennsylvania Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates · 48th-largest in Pennsylvania
The population of Jefferson County, Pennsylvania is 44,099 as of the 2023 American Community Survey, making it the 48th-largest county in Pennsylvania. The median household income is $56,898, the median home value is $126,700, and the median age is 43.7.
The population of Jefferson County has declined 4.0% since 2010 (45,163 → 43,367), a -0.29% annualized rate.
44,099
Population
-0.29%
Annual growth
68
People / sq mi
$56,898
Median Income
$126,700
Median Home Value
Jefferson County covers 652 sq mi of land at 67.6 people per square mile.
About Jefferson County, PA
Jefferson County is distinguished by its share of foreign-born residents, 11.9% of the population. Jefferson County is a county in Pennsylvania with a population of 44,099. It ranks #48 among counties in Pennsylvania by population.
Median household income is $56,898, below the US median of $78,538. Poverty runs at 11.3%, below the national 12.4%. Homes are comparatively cheap — a median value of $126,700, with typical rent around $746.
Degree attainment is on the lower side for US counties: 17.5% of adults hold a bachelor’s degree, below the national 35.0%. Most workers commute: only 5.1% work from home, below the national 14.0%, and the average commute runs about 24 minutes each way.
Jefferson County Population History (2010-2024)
The county of Jefferson County had a population of 45,163 in 2010 and 43,367 in 2024, a -4.0% growth over 14 years. The peak was 45,163 in 2010. Average annual growth rate: -0.29%.
43,367
Population (2024)
45,163
Population (2010)
45,163
Peak (2010)
-0.29%
Avg Annual Growth
| Year | Population |
|---|---|
| 2010 | 45,163 |
| 2011 | 44,917 |
| 2012 | 44,805 |
| 2013 | 44,879 |
| 2014 | 44,575 |
| 2015 | 44,350 |
| 2016 | 44,041 |
| 2017 | 43,829 |
| 2018 | 43,573 |
| 2019 | 43,299 |
| 2020 | 44,480 |
| 2021 | 44,121 |
| 2022 | 43,725 |
| 2023 | 43,625 |
| 2024 | 43,367 |
Race & Ethnicity
| White | 96.5% |
| Black or African American | 0.5% |
| Asian | 0.0% |
| Hispanic or Latino (any race) | 0.7% |
| Two or More Races | 0.0% |
Age & Sex
43.7
Median Age
49.9%
Female
50.1%
Male
21.7%
Age 65+
Age Distribution
Children (under 15): 17.5% · Seniors (65+): 21.7%
Income & Poverty
| Median household income | $56,898$-19,183 vs state |
| Mean household income | $73,117 |
| Per-capita income | $31,091 |
| Poverty rate | 11.3%+3.2% vs state |
| Unemployment rate | 2.7% |
| Employment-to-population | 53.9% |
Top Industries by Employment
The largest employment sector in Jefferson County is professional & business services, accounting for 23.2% of workers.
How residents commute
0.5%
Drive alone
3.4%
Carpool
81.1%
Public transit
5.1%
Work from home
23.9 min
Avg commute
Housing
$126,700$-113,800 vs state
Median home value
$746
Median rent
74.2%
Homeownership rate
22,053
Total housing units
82.6%
Occupied
17.4%
Vacant
25.8%
Renter-occupied
Social & access
91.5%
With health insurance
87.4%
With broadband internet
11.9%
Foreign-born
8.1%
Veterans (18+)
15.2%
With a disability
95.3%
Speak language other than English at home
Education
91.4%
High School+
17.5%
Bachelor's+
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Part of Pennsylvania
Metro areas in Pennsylvania
County rankings
Frequently Asked Questions
Jefferson County, Pennsylvania has a population of 44,099 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 48th-largest county in Pennsylvania. Population density is 68 people per square mile.
The population of Jefferson County has declined 4.0% since 2010 (45,163 → 43,367), a -0.29% annualized rate.
The median household income in Jefferson County, Pennsylvania is $56,898, with mean (average) household income of $73,117 and per-capita income of $31,091. 11.3% of residents live below the federal poverty level.
In Jefferson County, the largest racial and ethnic groups are White (96.5%), Hispanic or Latino (0.7%), Black or African American (0.5%). Figures are from the US Census Bureau's 2023 ACS 5-year estimates and reflect self-reported responses.
The median age in Jefferson County, Pennsylvania is 43.7 years. Residents are 49.9% female and 50.1% male.
The median home value in Jefferson County is $126,700 and median monthly rent is $746. 74.2% of occupied housing units are owner-occupied. The county has 22,053 total housing units, 17.4% of which are vacant.
The largest employment sector in Jefferson County, Pennsylvania is professional, scientific, and management services, employing 23.2% of workers. The unemployment rate is 2.7%.
Philadelphia is among the largest cities associated with Jefferson County, Pennsylvania, with a population of 1,582,432.
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Population, race, income, age, and trends across Pennsylvania
Data from the American Community Survey (ACS) 5-Year estimates.
Source: U.S. Census Bureau ACS, 2026.