Armstrong township
- County:
- Indiana County
- County Seat:
- No
- Area (mi²):
- 37.601
- State:
- Pennsylvania
Armstrong township is located in Indiana County, Pennsylvania. Armstrong township has a 2026 population of 2,760. Armstrong township is currently growing at a rate of 0.11% annually and its population has increased by 0.15% since the most recent census, which recorded a population of 2,756 in 2020.
The median household income in Armstrong township is $81,404 with a poverty rate of 3.43%. The median age in Armstrong township is 45 years: 39.5 years for males, and 48 years for females. For every 100 females there are 125.8 males.