Greene County, Illinois

Founding: 1821
Parent county: Madison

Namesake: Nathanael Greene, Continental Army general
Seat: Carrollton (1821–)

Land area: 543 square miles

Population (2020): 11,985

Population (historic): 7,674 (1830); 16,093 (1860); 23,010 (1880); 23,402 (1900); 20,417 (1930)

Periods of population growth: pre-1830–1890; 1910s

Subdivisions: Four cities; five villages; 13 townships

National Register listings: 12

Pre-1940 residences (estimated): 2,725 (42.6%)
Pre-1940 housing survival rate: 49.6%
Pre-1860 housing survival rate (1940): 11%

Farm housing in disrepair (1950): 7.8%

Nonfarm housing in disrepair (1950): 7.9%

Average farmhouse value (1930): $1,455
Average outbuilding value (1930): $1,224

Average farmhouse size (1940): 5.7 rooms
Number of farms (1920): 2,143
Average farm size (1920): 120.6 acres
Sources of settlement: Kentucky, Missouri, Tennessee, Ohio, Ireland, and Germany
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Carrollton

Namesake: Charles Carroll, Maryland politician

Founding: 1821 (platting); 1822 (post office); 1861 (incorporation)

Population (2020): 2,485

Population (historic): 1,934 (1880); 2,355 (1900); 2,075 (1930)

Periods of population growth: pre-1880–1900; 1920–1970; 1990s
Pre-1940 residences (estimated): 522 (44%)
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Outstanding Buildings

1. *Bluffdale / James Eldred House (1861). 100th Road, east of Hillview–Eldred Road. Bluffdale. Greek Revival/Italianate.
2. *John Russell House (1828). 355 650th Road. Bluffdale.
3. Thomas Purl House (c. 1840). 72 125th Road. Carrollton. Federal.
4. *Jacob Bowman Farm (c. 1860). 347 125th Road. Carrollton. Greek Revival/Italianate.
5. *John Thomas Farm (c. 1860). 275 150th Road. Carrollton. Italianate.
6. *Margaret Black Farm (1823/1850s). 85 200th Road. Carrollton. Federal.
7. *Elon Eldred Farm (c. 1850). 198 State Route 108. Carrollton. Greek Revival.
8. *Walnut Hall / Luman Curtius Farm (1868–1870). 216 State Route 108. Carrollton. Italianate.
9. *Greene County Infirmary (1870/1907). 375 325th Road. Linder. Italianate. Burned in 2022.
10. *Martin Thorpe Farm (c. 1855). 1309 50th Road. Rockbridge. Greek Revival.
11. *Azariah Sweetin House Ruins (1848). 700th Road and Hillview–Eldred Road. Walkerville.
12. *Benjamin Roodhouse Farm (c. 1850). 748 125th Road. White Hall. Greek Revival.
13. *Hazard Clendenen House Ruins (c. 1835). 750 675th Road. Woodville.