
Deerfield township
- County:
- Lake County
- County Seat:
- No
- Area (mi²):
- 34.173
- State:
- Illinois
Deerfield township is located in Lake County, Illinois. Deerfield township has a 2025 population of 237. Deerfield township is currently declining at a rate of -1.25% annually and its population has decreased by -4.82% since the most recent census, which recorded a population of 249 in 2020.
The average household income in Deerfield township is $86,868 with a poverty rate of 1.97%. The median age in Deerfield township is 54.5 years: 54.4 years for males, and 54.6 years for females.