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Population, Housing Units, Area, and Density: 2010 - State--Place (and in selected states) County Subdivision. Map, bar chart, and table showing Land area in square miles, 2010 by county. The source of the data is the US Census Bureau.
Oct 26, 2024 · See a county map of Illinois on Google Maps with this free, interactive map tool. This Illinois county map shows county borders and also has options to show county name labels, overlay city limits and townships and more. To do a county lookup by address, type the address into the “Search places” box above the map.
There are 102 counties in the state of Illinois. Old counties. Dane County was renamed in 1840 to the current Christian County. The original Knox County, Illinois, became extinct with the formation of the Illinois Territory in 1809. It became Knox County, Indiana.
A map of Illinois Counties with County seats and a satellite image of Illinois with County outlines.
Illinois has 72 counties with a population of less than 50,000; all but one (Monroe County) experienced a decline in population. Of the 15 counties with fewer than 10,000 residents, Alexander County experienced the most dramatic decrease with a growth rate of -26.15%.
Discover information on all 102 counties in the State of Illinois. Learn about historical facts and county boundary changes. Also a complete list of current and old (extinct) Illinois counties.
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There are 102 counties in the state of Illinois. Cook County in fact is the biggest county regarding population and the smallest county in terms of population is Hardin County. Geographically the biggest County is McLean County and Putnam County is the smallest.
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