Armstrong County's 2026 population is estimated at 62,849, reflecting a -0.66% growth rate over the past year (World Population Review estimate based on U.S. Census Bureau data). Armstrong County is the 41st largest county in Pennsylvania. The 2010 population was 69,029 and has grown -8.95% since 2010.
Data after 2023 is projected based on recent change
Overall: 47.2 years
Female: 47.8 years
Male: 46.6 years
There are 52,395 adults, (15,521 of whom are seniors) in Armstrong County.
Female: 32,231 (49.9%)
Male: 32,391 (50.1%)
The racial composition of Armstrong County includes 95.17% White, and smaller percentages for Two or more races, Black or African American, other race, Asian, Native American and multiracial populations.
| Race | Population ↓ | Percentage (of total) |
|---|---|---|
| White | 61,501 | 95.17% |
| Two or more races | 1,933 | 2.99% |
| Black or African American | 608 | 0.94% |
| Other race | 340 | 0.53% |
| Asian | 228 | 0.35% |
| Native American | 12 | 0.02% |
Armstrong County 's average per capita income is $46,628. Household income levels show a median of $65,008. The poverty rate stands at 11.79%.
| Name | Median ↓ | Mean |
|---|---|---|
| Married Families | $93,138 | $107,320 |
| Families | $84,951 | $98,371 |
| Households | $65,008 | $83,098 |
| Non Families | $35,627 | $51,032 |
Average Income
Median Household Income
Poverty Rate