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 distinguished by its share of foreign-born residents, 8.0% of the population. Armstrong County is a county in Pennsylvania with a population of 65,069. It ranks #39 among counties in Pennsylvania by population.
Household earnings are middling, with a median of $64,295 — below the US median of $78,538. Poverty runs at 7.1%, below the national 12.4%. Median home value is $146,300, with typical rent around $802.
Degree attainment is mid-range for US counties: 18.9% of adults hold a four-year degree, below the national 35.0%. Remote work is below the national 14.0% at 8.5%, and the average commute runs about 29 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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Part of Pennsylvania
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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.