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 a county in Pennsylvania with a population of 44,099. It ranks #48 among counties in Pennsylvania by population. The median age is 43.7, older than the national median. The population is 50.1% male and 49.9% female.
The median household income in Jefferson County is $56,898, below the US median of $74,580. 11.3% of residents live below the federal poverty level. Home values sit at a median of $126,700, with monthly rent averaging $746. The homeownership rate of 74.2% is higher than the national rate of 64.8%.
Educational attainment in Jefferson County reflects 17.5% of adults 25 and older holding a bachelor's degree or higher, below the national average of 34.3%. Roughly 5.1% of workers primarily work from home, below the national work-from-home rate of 14.2%. The average commute is 23.9 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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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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Data from the American Community Survey (ACS) 5-Year estimates.
Source: U.S. Census Bureau ACS, 2026.