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Winnebago County is a county located in the state of Illinois. According to the 2010 census, it had a
population of 295,266 Winnebago County was
created on January 16, 1836. The county
seat is Rockford. The county is named
for the Winnebago Native Americans.
Winnebago County is part of the Rockford, IL Metropolitan Statistical Area.
The county is named for the Winnebago Native Americans.
County QuickFacts: CensusBureau Quick Facts
Winnebago County was created on January 16, 1836 (Laws, 1836, p. 273) and was formed from unorganized land (La Salle)
and JoDaviess County. Present area, or parts of it, formerly included in: Eastern Part: LaSalle County (1831-1836),
Putnam County (1825-1831), Fulton County (1823-1825), Pike County (1821-1823), Clark County (1819-1821), Crawford County
(1816-1819), Edwards County (1815-1816), Madison County (1812-1815) and St. Clair County (1801-1812); Western Part:
JoDaviess County (1827-1836), Putnam County (1825-1827), Fulton County (1823-1825), Pike County (1821-1823), Bond County
(1817-1821), Madison County (1812-1817) and St. Clair County (1801-1812).
The County was named for the Winnebago Indian tribe who once occupied that part of northern Illinois. The Indian word Winnebago translates to "fish eater.". The County Seat is Rockford . Prior County Seats was Winnebago- Temporary designation (1836-1839) and Rockford (1839-Present).
As reported by the Census Bureau, the county has a total area of 519 square miles (1,345 km2), of which, 514 square miles (1,331 km2) of it is land and 6 square miles (14 km2) of it (1.07%) is water.
Winnebago county is located in north Illinois. Rock Cut State Park is
located in this county.
Bordering counties are as follows: