Rockford metropolitan area, Illinois

Combined statistical area in Illinois, United StatesRockford metropolitan areaCombined statistical areaRockford–Freeport–Rochelle, ILEast State Street corridorMap of Rockford–Freeport–Rochelle, IL CSA City of Rockford Rockford, IL MSA Freeport, IL µSA Rochelle, IL µSA Country United StatesState IllinoisArea • Total2,130 sq mi (5,510 km2)Population (2020) • Total338,798GDP • Total$18.129 billion (2022)Time zoneUTC−6 (CST) • Summer (DST)UTC−5 (CDT) The Rockford metropolitan area is a metropolitan area consisting of two counties in north-central Illinois anchored by the city of Rockford, as defined by the U.S. Office of Management and Budget. The population was 338,798 at the 2020 census. The Rockford MSA abuts the Janesville–Beloit metropolitan area to the north and Chicago metropolitan area to the east. It forms the main part of the larger Rockford–Freeport–Rochelle combined statistical area, a four-county region with 435,216 residents in 2020. Counties Boone Ogle (combined statistical area) Stephenson (combined statistical area) Winnebago Communities Places with more than 100,000 inhabitants Rockford (Principal City) Places with 20,000 to 30,000 inhabita