DeWitt County, Illinois

Founding: 1839
Parent counties: Macon and McLean

Namesake: DeWitt Clinton, New York governor
Seat: Clinton (1839–)

Land area: 398 square miles

Population (2020): 15,516

Population (historic): 3,247 (1840); 10,820 (1860); 17,010 (1880); 18,972 (1900); 18,598 (1930)

Periods of population growth: pre-1840–1900; 1910s; 1950s; 1970s; 1990s

Subdivisions: Two cities; five villages; 13 townships

Pre-1940 residences (estimated): 2,390 (31.6%)
Pre-1940 housing survival rate: 50.4%
Pre-1860 housing survival rate (1940): 6.7%

Farm housing in disrepair (1950): 5.6%

Nonfarm housing in disrepair (1950): 5.7%

Average farmhouse value (1930): $1,918
Average outbuilding value (1930): $2,138

Average farmhouse size (1940): 6.2 rooms
Number of farms (1920): 1,586
Average farm size (1920): 141.7 acres
Sources of settlement: Ohio, Indiana, Kentucky, and Ireland
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Clinton

Namesake: DeWitt Clinton, New York governor

Founding: 1835 (platting); 1836 (post office); 1855 (incorporation)

Population (2020): 7,004

Population (historic): 367 (1850); 1,800 (1870); 2,598 (1890); 5,165 (1910); 5,920 (1930)

Periods of population growth: pre-1850–1880; 1890–1940; 1950–1980; 1990s
Pre-1940 residences (estimated): 1,115 (32.9%)
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Outstanding Buildings

1. John Wasson Farm (c. 1875). 1661 State Route 10. Barnett. Italianate.
2. Ollie Marsh House (c. 1895). 7498 Reagan Road. Clintonia. Queen Anne.
3. Clifton Moore Farm (1883). 10496 Trust Road. Clintonia. Italianate.
4. Campbell House (c. 1865). 7609 US Highway 51B. Clintonia. Italianate.
5. John Warner House (c. 1870). 7747 US Highway 51B. Clintonia. Italianate. Razed.
6. Anthony Trenkle House (c. 1880). 26155 US Highway 150. Santa Anna. Italianate.
7. William Brelsford House (c. 1870). 3904 State Route 54. Tunbridge. Italianate.

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