Cambridge
- County:
- Henry County
- County Seat:
- Yes
- Area (mi²):
- 1.991
- State:
- Illinois
Cambridge is a village located in Henry County, Illinois. Cambridge has a 2026 population of 2,034. It is also the county seat of Henry County. Cambridge is currently declining at a rate of -0.49% annually and its population has decreased by -2.4% since the most recent census, which recorded a population of 2,084 in 2020.
The median household income in Cambridge is $64,979 with a poverty rate of 13.08%. The median age in Cambridge is 34.7 years: 33.6 years for males, and 37.4 years for females. For every 100 females there are 99.3 males.