Annin township
- County:
- McKean County
- County Seat:
- No
- Area (mi²):
- 33.12
- State:
- Pennsylvania
Annin township is located in McKean County, Pennsylvania. Annin township has a 2026 population of 711. Annin township is currently growing at a rate of 1.28% annually and its population has increased by 0.57% since the most recent census, which recorded a population of 707 in 2020.
The median household income in Annin township is $108,333 with a poverty rate of 7.23%. The median age in Annin township is 52.2 years: 52.3 years for males, and 49.9 years for females. For every 100 females there are 153.4 males.