Randolph County, Illinois

Founding: 1795
Parent county: St. Clair

Namesake: Edmund Randolph, Virginia politician
Seat: Kaskaskia (1795–1844); Chester (1844–)

Land area: 576 square miles

Population (2020): 30,163

Population (historic): 3,492 (1820); 11,079 (1850); 20,859 (1870); 28,001 (1900); 29,313 (1930)

Periods of population growth: pre-1820–1880; 1890–1940; 1960–1980

Subdivisions: Three cities; 11 villages

Pre-1940 residences (estimated): 2,681 (19.2%)
Pre-1940 housing survival rate: 40.3%
Pre-1860 housing survival rate (1940): 11.1%

Farm housing in disrepair (1950): 11.3%

Nonfarm housing in disrepair (1950): 13.9%

Average farmhouse value (1930): $1,057
Average outbuilding value (1930): $895

Average farmhouse size (1940): 5.5 rooms
Number of farms (1920): 2,324
Average farm size (1920): 106.5 acres
Sources of settlement: Germany, Missouri, Ireland, and Tennessee
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Chester

Namesake: Chester, England

Founding: 1830 (founding); 1832 (post office); 1835 (incorporation)

Population (2020): 7,640

Population (historic): 1,615 (1870); 2,708 (1890); 2,747 (1910); 3,922 (1930)

Periods of population growth: pre-1870–1900; 1910–1950; 1960–1980; 1990–2010
Pre-1940 residences (estimated): 523 (22.2%)
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Outstanding Buildings

1. Amos Glen Farm (c. 1850). 6501 Bottom Road.
2. Franklin Brickey Log House. Goose Lake Road, east of Stringtown Road. Razed.
3. Farm (c. 1875). 6133 Great River Road. Gothic Revival.
4. Pierre Menard House (1802). 4230 Kaskaskia Street.
5. David Fulton House (c. 1835). 8751 Michael Road. Italianate.
6. St. Patrick's Academy (1866–1867). 2 Pioneer Lane. Romanesque.
7. Trinity Lutheran Church (1868). 10235 Prairie Road. Gothic Revival.
8. Alexander McKelvey House (c. 1860). 10731 Ridge Road. Italianate.
9. Charter Oak School (1873). 9272 Schuline Road.
10. Samuel Boyd Log House. 10370 Tilden Road. Razed.
11. St. Paul's Lutheran Church (1883). 11854 Wine Hill Road. Gothic Revival.

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