How many people live in Armstrong County, PA?
Updated Apr. 6, 2026Refreshed annually
In 2024, there were about 63,700 people living in Armstrong County, PA. That makes Armstrong County the 40th-most populous county in Pennsylvania. It is home to 0.49% of people living in the state.
63.7K
population of Armstrong County, PA (2024)
0.49%
County share of the Pennsylvania population (2024)
About 63,700 people lived in Armstrong County, PA in 2024.
Population estimates, 2000–2024
What are Armstrong County, PA’s age demographics?
About 16,100 Armstrong County, PA residents are aged 65 and older in 2024. That represents 25.3% of its population. For comparison, the age group represents 20.4% of Pennsylvania’s population and 18% in the US overall.
Another 11,800 Armstrong County residents, or 18.6% of the population, were children under 18. For comparison, the age group represents 20.1% of Pennsylvania’s population and 21.6% in the US overall.
A higher share of Armstrong County, PA's population is aged 65 or older than the US as a whole.
Population estimates by age group, (2024)
What are Armstrong County, PA’s racial and ethnic demographics?
Non-Hispanic white residents make up 96.3% of the Armstrong County, PA population, higher than the national share of 57.5%.
In contrast, Armstrong County’s Hispanic population accounts for 1.1%, below the 20% nationwide, and the non-Hispanic Black or African American population makes up 1.2% of the county, compared with 12.6% nationally.
Racial and ethnic make up differ based on location. These figures reflect how people identified their race alone (not in combination with other races), and separate out Hispanic or Latino ethnicity, following Census reporting standards.
Armstrong County, PA has a higher share of a non-Hispanic white population than Pennsylvania as a whole.
Population estimates by race and ethnicity, (2024)
The largest city or town in Armstrong County, PA is Kiskiminetas with about 4,500 residents in 2024.
Cities and towns in Armstrong County, PA ranked by population
Population (2024), includes only portions within county
| City or town | Population | |
|---|---|---|
| 1. | Kiskiminetas | 4,497 |
| 2. | Manor | 4,048 |
| 3. | Kittanning borough | 3,920 |
| 4. | East Franklin | 3,716 |
| 5. | Ford City borough | 2,763 |
| 6. | South Buffalo | 2,660 |
| 7. | Cowanshannock | 2,654 |
| 8. | North Buffalo | 2,614 |
| 9. | Parks | 2,396 |
| 10. | Gilpin | 2,337 |
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Methodology
USAFacts standardizes data, in areas such as time and demographics, to make it easier to understand and compare.
The analysis was generated with the help of AI and reviewed by USAFacts for accuracy.
Page sources
USAFacts endeavors to share the most up-to-date information available. We sourced the data on this page directly from government agencies; however, the intervals at which agencies publish updated data vary.
