Thornbury township
- County:
- Chester County
- County Seat:
- No
- Area (mi²):
- 3.833
- State:
- Pennsylvania
Thornbury township is located in Chester County, Pennsylvania. Thornbury township has a 2026 population of 3,192. Thornbury township is currently growing at a rate of 0.44% annually and its population has increased by 0.44% since the most recent census, which recorded a population of 3,178 in 2020.
The median household income in Thornbury township is $172,070 with a poverty rate of 2.42%. The median age in Thornbury township is 44.1 years: 45 years for males, and 44 years for females. For every 100 females there are 95.5 males.