
Thornbury township
- County:
- Delaware County
- County Seat:
- No
- Area (mi²):
- 9.236
- State:
- Pennsylvania
Thornbury township is located in Delaware County, Pennsylvania. Thornbury township has a 2025 population of 6,910. Thornbury township is currently declining at a rate of 0% annually and its population has increased by 0.22% since the most recent census, which recorded a population of 6,895 in 2020.
The average household income in Thornbury township is $240,940 with a poverty rate of 2.07%. The median age in Thornbury township is 43.2 years: 43.6 years for males, and 43.1 years for females.