
Rockford
- County:
- Winnebago County
- County Seat:
- Yes
- Area (mi²):
- 65.084
- State:
- Illinois
Rockford is a city located in Winnebago County, Illinois. Rockford has a 2025 population of 144,420. It is also the county seat of Winnebago County. Rockford is currently declining at a rate of -0.59% annually and its population has decreased by -2.86% since the most recent census, which recorded a population of 148,670 in 2020.
The average household income in Rockford is $71,994 with a poverty rate of 21.87%. The median age in Rockford is 37.5 years: 36 years for males, and 38.9 years for females.