Armstrong County, Pennsylvania Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates · 39th-largest in Pennsylvania
The population of Armstrong County, Pennsylvania is 65,069 as of the 2023 American Community Survey, making it the 39th-largest county in Pennsylvania. The median household income is $64,295, the median home value is $146,300, and the median age is 47.2.
The population of Armstrong County has declined 7.8% since 2010 (69,029 → 63,679), a -0.57% annualized rate.
65,069
Population
-0.57%
Annual growth
100
People / sq mi
$64,295
Median Income
$146,300
Median Home Value
Armstrong County covers 653 sq mi of land at 99.6 people per square mile.
About Armstrong County, PA
Armstrong County is a county in Pennsylvania with a population of 65,069. It ranks #39 among counties in Pennsylvania by population. The median age is 47.2, older than the national median. The population is 50.2% male and 49.8% female.
The median household income in Armstrong County is $64,295, below the US median of $74,580. 7.1% of residents live below the federal poverty level. Home values sit at a median of $146,300, with monthly rent averaging $802. The homeownership rate of 78.6% is higher than the national rate of 64.8%.
Educational attainment in Armstrong County reflects 18.9% of adults 25 and older holding a bachelor's degree or higher, below the national average of 34.3%. Roughly 8.5% of workers primarily work from home, below the national work-from-home rate of 14.2%. The average commute is 29.0 minutes each way.
Armstrong County Population History (2010-2024)
The county of Armstrong County had a population of 69,029 in 2010 and 63,679 in 2024, a -7.8% growth over 14 years. The peak was 69,029 in 2010. Average annual growth rate: -0.57%.
63,679
Population (2024)
69,029
Population (2010)
69,029
Peak (2010)
-0.57%
Avg Annual Growth
| Year | Population |
|---|---|
| 2010 | 69,029 |
| 2011 | 68,661 |
| 2012 | 68,223 |
| 2013 | 68,015 |
| 2014 | 67,631 |
| 2015 | 66,913 |
| 2016 | 66,464 |
| 2017 | 66,042 |
| 2018 | 65,411 |
| 2019 | 64,699 |
| 2020 | 65,460 |
| 2021 | 65,211 |
| 2022 | 64,664 |
| 2023 | 64,094 |
| 2024 | 63,679 |
Race & Ethnicity
| White | 95.8% |
| Black or African American | 1.0% |
| Asian | 0.0% |
| Hispanic or Latino (any race) | 0.4% |
| Two or More Races | 0.0% |
Age & Sex
47.2
Median Age
49.8%
Female
50.2%
Male
23.4%
Age 65+
Age Distribution
Children (under 15): 15.4% · Seniors (65+): 23.4%
Income & Poverty
| Median household income | $64,295$-11,786 vs state |
| Mean household income | $82,218 |
| Per-capita income | $35,313 |
| Poverty rate | 7.1%-1.0% vs state |
| Unemployment rate | 2.7% |
| Employment-to-population | 55.0% |
Top Industries by Employment
The largest employment sector in Armstrong County is professional & business services, accounting for 25.7% of workers.
How residents commute
0.2%
Drive alone
2.5%
Carpool
78.9%
Public transit
8.5%
Work from home
29.0 min
Avg commute
Housing
$146,300$-94,200 vs state
Median home value
$802
Median rent
78.6%
Homeownership rate
32,164
Total housing units
87.1%
Occupied
12.9%
Vacant
21.4%
Renter-occupied
Social & access
96.0%
With health insurance
89.5%
With broadband internet
8.0%
Foreign-born
8.8%
Veterans (18+)
16.9%
With a disability
97.7%
Speak language other than English at home
Education
93.1%
High School+
18.9%
Bachelor's+
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County rankings
Frequently Asked Questions
Armstrong County, Pennsylvania has a population of 65,069 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 39th-largest county in Pennsylvania. Population density is 100 people per square mile.
The population of Armstrong County has declined 7.8% since 2010 (69,029 → 63,679), a -0.57% annualized rate.
The median household income in Armstrong County, Pennsylvania is $64,295, with mean (average) household income of $82,218 and per-capita income of $35,313. 7.1% of residents live below the federal poverty level.
In Armstrong County, the largest racial and ethnic groups are White (95.8%), Black or African American (1.0%), Hispanic or Latino (0.4%). Figures are from the US Census Bureau's 2023 ACS 5-year estimates and reflect self-reported responses.
The median age in Armstrong County, Pennsylvania is 47.2 years. Residents are 49.8% female and 50.2% male.
The median home value in Armstrong County is $146,300 and median monthly rent is $802. 78.6% of occupied housing units are owner-occupied. The county has 32,164 total housing units, 12.9% of which are vacant.
The largest employment sector in Armstrong County, Pennsylvania is professional, scientific, and management services, employing 25.7% of workers. The unemployment rate is 2.7%.
Philadelphia is among the largest cities associated with Armstrong 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.