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De Witt County, Illinois

De Witt County, Illinois
DeWitt County Courthouse, Clinton.jpg
DeWitt County Courthouse in Clinton, Illinois
Map of Illinois highlighting De Witt County
Location in the U.S. state of Illinois
Map of the United States highlighting Illinois
Illinois's location in the U.S.
Founded 1839
Named for DeWitt Clinton
Seat Clinton
Largest city Clinton
Area
 • Total 405 sq mi (1,049 km2)
 • Land 398 sq mi (1,031 km2)
 • Water 7.6 sq mi (20 km2), 1.9%
Population
 • (2010) 16,561
 • Density 42/sq mi (16/km²)
Congressional district 13th
Time zone Central: UTC-6/-5
Website www.dewittcountyill.com
Clinton, Illinois
Climate chart ()
J F M A M J J A S O N D
 
 
2.1
 
 
35
17
 
 
2
 
 
41
22
 
 
3.2
 
 
53
32
 
 
3.6
 
 
65
42
 
 
4.5
 
 
76
52
 
 
3.9
 
 
85
61
 
 
4.5
 
 
88
65
 
 
4.1
 
 
86
63
 
 
3
 
 
80
55
 
 
2.7
 
 
68
44
 
 
3.3
 
 
52
34
 
 
2.9
 
 
39
23
Average max. and min. temperatures in °F
Precipitation totals in inches
Source: The Weather Channel
J F M A M J J A S O N D
 
 
2.1
 
 
35
17
 
 
2
 
 
41
22
 
 
3.2
 
 
53
32
 
 
3.6
 
 
65
42
 
 
4.5
 
 
76
52
 
 
3.9
 
 
85
61
 
 
4.5
 
 
88
65
 
 
4.1
 
 
86
63
 
 
3
 
 
80
55
 
 
2.7
 
 
68
44
 
 
3.3
 
 
52
34
 
 
2.9
 
 
39
23
Average max. and min. temperatures in °F
Precipitation totals in inches
Source: The Weather Channel