
Brimfield
- County:
- Peoria County
- County Seat:
- No
- Area (mi²):
- 0.921
- State:
- Illinois
Brimfield is a village located in Peoria County, Illinois. Brimfield has a 2025 population of 751. Brimfield is currently declining at a rate of -0.66% annually and its population has decreased by -3.22% since the most recent census, which recorded a population of 776 in 2020.
The average household income in Brimfield is $72,519 with a poverty rate of 9.54%. The median age in Brimfield is 44.6 years: 42.5 years for males, and 46 years for females.