Winnebago County, Illinois

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Winnebago County, Illinois
City Hall in Rockford, Illinois.
Location within Illinois
Location within Illinois
Map of the United States highlighting Illinois
Illinois's location within the U.S.
FoundedJanuary 16, 1836
Named forWinnebago Tribe
Largest cityRockford
 • Total519 sq mi (1,344 km2)
 • Land513 sq mi (1,329 km2)
 • Water5.9 sq mi (15 km2), 1.1%
 • (2010)295,266
 • Density575/sq mi (222/km2)
Congressional districts16th, 17th
Time zoneCentral: UTC−6/−5

Winnebago County is a county in the U.S. state of Illinois. According to the 2010 census, it had a population of 295,266,[1] making it the seventh most populous county in Illinois after Cook County. Its county seat is Rockford.[2]

Winnebago County was founded on January 16, 1836 and named for the Winnebago Tribe of American Indians.

References[change | change source]

  1. "State & County QuickFacts". United States Census Bureau. Retrieved July 9, 2014.
  2. "Find a County". National Association of Counties. Retrieved 2011-06-07.