Kane County is a county located in the U.S. state of Illinois. According to the 2010 census, it has a population of 515,269, which is an increase of 27.5% from 404,119 in 2000. Its county seat is Geneva, and its largest city is Aurora. According to the 2010 census, the county has a total area of 524.20 square miles , of which 520.06 square miles is land and 4.14 square miles is water. Its largest cities are situated along the Fox River. Kane County was formed out of LaSalle County in 1836. The County was named in honor of Elias Kane, United States Senator from Illinois, and the first... Secretary of State of Illinois. As of the census of 2000, there were 404,119 people, 133,901 households, and 101,496 families residing in the county. The population density was 776 people per square mile . There were 138,998 housing units at an average density of 267 per square mile . The racial makeup of the county was 79.27% White, 5.76% Black or African American, 0.31% Native American, 1.81% Asian, 0.04% Pacific Islander, 10.61% from other races, and 2.21% from two or more races. 23.
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| Founded: | January 16, 1836 |
| State: | Illinois |
| Population: | 515,269 |
| Area: | 524 sq. mi. |
| Time zone: | Central Time zone |