Map of De Witt County, Illinois

DeWitt County is a county located in the U.S. state of Illinois. As of the 2010 census, the population was 16,561. Its county seat is Clinton. The county was formed on March 1, 1839, from Macon and McLean counties. The county was named in honor of the seventh Governor of New York State, DeWitt Clinton.

DeWitt County is included in Bloomington–Normal, IL Metropolitan Statistical Area.

The U.S. Census Bureau and the USGS list the county’s name as De Witt, although the county uses the name DeWitt (no space).

De Witt County overview:
Name:	De Witt County
FIPS code:	17-039
State:	Illinois
Founded:	1839
Named for:	DeWitt Clinton
Seat:	Clinton
Largest city:	Clinton
Total Area:	405 sq mi (1,050 km²)
Land Area:	398 sq mi (1,030 km²)
Total Population:	16,561
Population Density:	41/sq mi (16/km²)
Time zone:	UTC−6 (Central)
Summer Time Zone (DST):	UTC−5 (CDT)
Website:	www.dewittcountyill.com

De Witt County location map. Where is De Witt County?

De Witt County location on the U.S. Map. Where is De Witt County. — Location of De Witt County in the the United States.

De Witt County location on the Illinois map. Where is De Witt County. — Location of De Witt County in Illinois.

History

DeWitt County from its creation in 1839 to the splitting off of Piatt County in 1841
DeWitt County from 1841 to 1845
DeWitt County in 1845, when it was reduced to its current size

De Witt County Road Map

De Witt CountyStreet Map. — Street map of De Witt County, Illinois. Source: OpenStreetMap (OSM)

De Witt CountyMap — De Witt Countypolitical map.

Geography

According to the U.S. Census Bureau, the county has a total area of 405 square miles (1,050 km), of which 398 square miles (1,030 km) is land and 7.6 square miles (20 km) (1.9%) is water.

Climate and weather

In recent years, average temperatures in the county seat of Clinton have ranged from a low of 17 °F (−8 °C) in January to a high of 88 °F (31 °C) in July, although a record low of −25 °F (−32 °C) was recorded in February 1905 and a record high of 113 °F (45 °C) was recorded in July 1954. Average monthly precipitation ranged from 1.95 inches (50 mm) in February to 4.54 inches (115 mm) in July.