Lone Grove township
- County:
- Fayette County
- County Seat:
- No
- Area (mi²):
- 36.861
- State:
- Illinois
Lone Grove township is located in Fayette County, Illinois. Lone Grove township has a 2026 population of 614. Lone Grove township is currently declining at a rate of -0.32% annually and its population has decreased by -1.76% since the most recent census, which recorded a population of 625 in 2020.
The median household income in Lone Grove township is $66,635 with a poverty rate of 7.67%. The median age in Lone Grove township is 47.3 years: 41.2 years for males, and 53 years for females. For every 100 females there are 108.3 males.