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 a county in Pennsylvania with a population of 90,925. It ranks #32 among counties in Pennsylvania by population. The median age is 44.4, older than the national median. The population is 50.9% male and 49.1% female.
The median household income in Northumberland County is $57,948, below the US median of $74,580. 8.6% of residents live below the federal poverty level. Home values sit at a median of $151,600, with monthly rent averaging $777. The homeownership rate of 74.8% is higher than the national rate of 64.8%.
Educational attainment in Northumberland County reflects 19.2% of adults 25 and older holding a bachelor's degree or higher, below the national average of 34.3%. Roughly 8.1% of workers primarily work from home, below the national work-from-home rate of 14.2%. The average commute is 25.4 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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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.