
Prairie Grove
- County:
- McHenry County
- County Seat:
- No
- Area (mi²):
- 5.781
- State:
- Illinois
Prairie Grove is a village located in McHenry County, Illinois. Prairie Grove has a 2025 population of 1,938. Prairie Grove is currently declining at a rate of -0.21% annually and its population has decreased by -1.12% since the most recent census, which recorded a population of 1,960 in 2020.
The average household income in Prairie Grove is $192,933 with a poverty rate of 4.42%. The median age in Prairie Grove is 41.7 years: 41.7 years for males, and 41.8 years for females.