Rockford, Illinois metropolitan area
The Rockford Metropolitan Statistical Area, as defined by the United States Census Bureau, is an area consisting of four counties in north-central Illinois, anchored by the city of Rockford. As of the 2010 census, the MSA had a population of 349,431 (though a 2011 estimate placed the population at 348,360). The Rockford MSA is adjacent to the Janesville-Beloit MSA and the Chicago MSA. It forms the main part of the larger Rockford–Freeport–Rochelle Combined Statistical Area (est. pop. 455,595).
- Places with more than 150,000 inhabitants
- Rockford (Principal City)
- Places with 1,000 to 5,000 inhabitants
As of the census of 2000, there were 320,204 people, 122,577 households, and 84,896 families residing within the MSA. The racial makeup of the MSA was 83.46% White, 9.27% African American, 0.29% Native American, 1.56% Asian, 0.03% Pacific Islander, 3.57% from other races, and 1.82% from two or more races. Hispanic or Latino of any race were 7.63% of the population.
The median income for a household in the MSA was $48,142, and the median income for a family was $55,881. Males had a median income of $41,141 versus $25,819 for females. The per capita income for the MSA was $21,392.
Combined Statistical Area 
The Rockford–Freeport–Rochelle Combined Statistical Area is made up of four counties in north-central Illinois. The statistical area includes one metropolitan area and two micropolitan areas. As of the 2000 Census, the CSA had a population of 420,215 (though a July 1, 2009 estimate placed the population at 455,595).
- Metropolitan Statistical Areas (MSAs)
- Rockford (Winnebago and Boone counties)
See also 
- "Table 1. Annual Estimates of the Population of Metropolitan and Micropolitan Statistical Areas: April 1, 2011 (CBSA-EST2009-01)" (CSV). 2011 Population Estimates. United States Census Bureau, Population Division. 2010-03-23. Retrieved 2012-09-07.
- "American FactFinder". United States Census Bureau. Retrieved 2008-01-31.
- "Table 2. Annual Estimates of the Population of Combined Statistical Areas: April 1, 2000 to July 1, 2009 (CBSA-EST2009-02)" (CSV). 2009 Population Estimates. United States Census Bureau, Population Division. 2010-03-23. Retrieved 2010-03-26.