
Haines township
- County:
- Marion County
- County Seat:
- No
- Area (mi²):
- 36.064
- State:
- Illinois
Haines township is located in Marion County, Illinois. Haines township has a 2025 population of 845. Haines township is currently declining at a rate of -0.35% annually and its population has decreased by -2.65% since the most recent census, which recorded a population of 868 in 2020.
The average household income in Haines township is $75,858 with a poverty rate of 8.92%. The median age in Haines township is 40.3 years: 39.4 years for males, and 41.6 years for females.