De Witt County, Illinois

De Witt County: county in Illinois, United States

About

De Witt County is a county located in the U.S. state of Illinois. As of the 2010 census, the population was 16,561 and a population density of 16 people per km². After 10 years in 2020 county had an estimated population of 15,368 inhabitants. Its county seat is Clinton. The county was created 187 years ago in 1838.

De Witt County locator map
Location of De Witt County on Illinois map.

County Snapshot

De Witt County at a glance

De Witt County currently has 8 quality-checked populated place pages linked on MapSof, making it easier to jump from the county overview into local city pages.

Browse county places

Mapped populated places

8

These counts use a stricter populated-place filter so the main lists stay focused on real city and town pages.

Quick Facts about De Witt County

Population 15,368 (2020)
Country United States of America
State Illinois (United States)
Area 1030 km2
Water as percent of area 1.9%
Land as percent of area 98.1%
Latitude & Longitude 40.1746,-88.9041
Named for DeWitt Clinton
Altitude 732 feet / 223 meters
Capital Clinton
Establishment January 01, 1839
Time Zone America/Chicago
Local time 18:14:43 (22nd April 2026)
Density 15 Pop. per km² as of 2020
Population growth -7.76% (2010-2020)
Weather 79℉ Mostly Sunny 7-days weather
DeWitt County Courthouse  Clinton image
DeWitt County Courthouse Clinton image

Geography

De Witt County is located at 40°10'29"N 88°54'15"W (40.1746300, -88.9040900). It has 2 neighbors: Logan County and Piatt County.

De Witt County map

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The largest city of De Witt County is Clinton with a population of 6,733. Other cities include, Farmer City population 1,936, Tunbridge population 716, Wapella population 510 and Weldon population 404. See all De Witt County cities & populated places.

De Witt County Populated Places

Cities, towns, neighborhoods & other populated places in De Witt County.

City Name Population Title
Clinton 6,733 Largest city in DeWitt County, Illinois, United States
Farmer City 1,936 City in De Witt County, Illinois, United States
Tunbridge 716 Unincorporated community in Illinois
Wapella 510 Human settlement in Illinois, United States of America
Weldon 404 Village in DeWitt County, Illinois, United States
Waynesville 402 Human settlement in Illinois, United States of America
Kenney 310 Human settlement in Illinois, United States of America
De Witt 175 City in De Witt County, Illinois, United States

Weather

79°F
Mostly Sunny
10 mph SW Wednesday

Mostly sunny, with a high near 79.

7-Day Forecast

Official website of De Witt County

Official Website

Demographics

According to census records, the population of De Witt County decreased by 7.76% in 10 years.

Year Population % Change Method
2010 16,561 - census
2011 16,548 -0.08% estimation process
2012 16,491 -0.35% estimation process
2013 16,373 -0.72% estimation process
2014 16,217 -0.96% estimation process
2015 16,184 -0.2% estimation process
2016 16,137 -0.29% estimation process
2017 15,906 -1.45% estimation process
2018 15,794 -0.71% estimation process
2019 15,638 -1% estimation process
2020 15,368 -1.76% estimation process
Comte de De Witt, Comté de De Witt, De Witt, Dewitt County

People born in De Witt County (1)

American politician (1869-1961) Benjamin S. Paulen was born in De Witt County

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Naperville 147,986 The second most populous city in Illinois.