| Name | Armstrong County |
| State | Pennsylvania |
| FIPS Code | 42005 |
| County Seat | Kittanning |
| Timezone | Eastern Daylight Time (EDT) |
| Population (2024) | 64,094 |
| Population Growth Rate(2020-2024) | -2.27% |
| Majority Ethnicity | White 97.66% |
| Public School Majority Ethnicity | White 93% |
| Partisan Voting Index | Strongly Republican:+28 |
| Unemployment Rate (May 2026) | 6.0% |
| Area Code(s) | 724 / 878 / 582 / 814 |
| Race/Ethnicity | Percentage of Population (2023) |
|---|---|
| White | 97.66% |
| African American | 0.98% |
| Hispanic | 0.91% |
| Asian | 0.42% |
| Native American | 0.02% |
| Hawaiin/Pacific Islander | 0% |
| Race/Ethnicity | Percentage of Public School Students (2023) |
|---|---|
| White | 93.37% |
| African American | 2.57% |
| Hispanic | 1.56% |
| Asian | 0.35% |
| Native American | 0.09% |
| Hawaiin/Pacific Islander | 0% |