Heidelberg township
- County:
- Lebanon County
- County Seat:
- No
- Area (mi²):
- 24.237
- State:
- Pennsylvania
Heidelberg township is located in Lebanon County, Pennsylvania. Heidelberg township has a 2026 population of 4,086. Heidelberg township is currently growing at a rate of 0.99% annually but its population has decreased by -0.34% since the most recent census, which recorded a population of 4,100 in 2020.
The median household income in Heidelberg township is $92,103 with a poverty rate of 3.59%. The median age in Heidelberg township is 30.3 years: 32.1 years for males, and 29.6 years for females. For every 100 females there are 101.1 males.