Northumberland County, Pennsylvania Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates · 32nd-largest in Pennsylvania
The population of Northumberland County, Pennsylvania is 90,925 as of the 2023 American Community Survey, making it the 32nd-largest county in Pennsylvania. The median household income is $57,948, the median home value is $151,600, and the median age is 44.4.
The population of Northumberland County has declined 4.5% since 2010 (94,287 → 90,027), a -0.33% annualized rate.
90,925
Population
-0.33%
Annual growth
199
People / sq mi
$57,948
Median Income
$151,600
Median Home Value
Northumberland County covers 458 sq mi of land at 198.7 people per square mile.
About Northumberland County, PA
Northumberland County is distinguished by its share of foreign-born residents, 11.5% of the population. Northumberland County is a county in Pennsylvania with a population of 90,925. It ranks #32 among counties in Pennsylvania by population.
Median household income is $57,948, below the US median of $78,538. The poverty rate is 8.6%, below the national 12.4%. Homes carry a median value of $151,600, with typical rent around $777.
Roughly 19.2% of adults have a bachelor’s, below the national 35.0%. Around 8.1% of workers work from home, below the national 14.0%, and the average commute runs about 25 minutes each way.
Northumberland County Population History (2010-2024)
The county of Northumberland County had a population of 94,287 in 2010 and 90,027 in 2024, a -4.5% growth over 14 years. The peak was 94,413 in 2012. Average annual growth rate: -0.33%.
90,027
Population (2024)
94,287
Population (2010)
94,413
Peak (2012)
-0.33%
Avg Annual Growth
| Year | Population |
|---|---|
| 2010 | 94,287 |
| 2011 | 94,392 |
| 2012 | 94,413 |
| 2013 | 93,884 |
| 2014 | 93,604 |
| 2015 | 92,895 |
| 2016 | 92,336 |
| 2017 | 91,766 |
| 2018 | 91,124 |
| 2019 | 90,684 |
| 2020 | 91,550 |
| 2021 | 91,001 |
| 2022 | 90,093 |
| 2023 | 90,131 |
| 2024 | 90,027 |
Race & Ethnicity
| White | 91.1% |
| Black or African American | 2.7% |
| Asian | 0.0% |
| Hispanic or Latino (any race) | 0.6% |
| Two or More Races | 0.0% |
Age & Sex
44.4
Median Age
49.1%
Female
50.9%
Male
21.7%
Age 65+
Age Distribution
Children (under 15): 16.2% · Seniors (65+): 21.7%
Income & Poverty
| Median household income | $57,948$-18,133 vs state |
| Mean household income | $75,909 |
| Per-capita income | $32,241 |
| Poverty rate | 8.6%+0.5% vs state |
| Unemployment rate | 2.2% |
| Employment-to-population | 54.6% |
Top Industries by Employment
The largest employment sector in Northumberland County is professional & business services, accounting for 28.5% of workers.
How residents commute
0.3%
Drive alone
3.2%
Carpool
77.7%
Public transit
8.1%
Work from home
25.4 min
Avg commute
Housing
$151,600$-88,900 vs state
Median home value
$777
Median rent
74.8%
Homeownership rate
43,395
Total housing units
86.6%
Occupied
13.4%
Vacant
25.2%
Renter-occupied
Social & access
95.7%
With health insurance
87.9%
With broadband internet
11.5%
Foreign-born
8.3%
Veterans (18+)
16.4%
With a disability
96.1%
Speak language other than English at home
Education
90.0%
High School+
19.2%
Bachelor's+
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Part of Pennsylvania
Metro areas in Pennsylvania
County rankings
Frequently Asked Questions
Northumberland County, Pennsylvania has a population of 90,925 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 32nd-largest county in Pennsylvania. Population density is 199 people per square mile.
The population of Northumberland County has declined 4.5% since 2010 (94,287 → 90,027), a -0.33% annualized rate.
The median household income in Northumberland County, Pennsylvania is $57,948, with mean (average) household income of $75,909 and per-capita income of $32,241. 8.6% of residents live below the federal poverty level.
In Northumberland County, the largest racial and ethnic groups are White (91.1%), Black or African American (2.7%), Hispanic or Latino (0.6%). Figures are from the US Census Bureau's 2023 ACS 5-year estimates and reflect self-reported responses.
The median age in Northumberland County, Pennsylvania is 44.4 years. Residents are 49.1% female and 50.9% male.
The median home value in Northumberland County is $151,600 and median monthly rent is $777. 74.8% of occupied housing units are owner-occupied. The county has 43,395 total housing units, 13.4% of which are vacant.
The largest employment sector in Northumberland County, Pennsylvania is professional, scientific, and management services, employing 28.5% of workers. The unemployment rate is 2.2%.
Philadelphia is among the largest cities associated with Northumberland 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.