Harp township
- County:
- De Witt County
- County Seat:
- No
- Area (mi²):
- 31.186
- State:
- Illinois
Harp township is located in De Witt County, Illinois. Harp township has a 2026 population of 295. Harp township is currently declining at a rate of 0% annually and its population has decreased by -0.34% since the most recent census, which recorded a population of 296 in 2020.
The median household income in Harp township is $70,694 with a poverty rate of 0%. The median age in Harp township is 38.4 years: 33.4 years for males, and 39 years for females. For every 100 females there are 192.9 males.