Logan County, Illinois

Founding: 1839
Parent county: Sangamon

Namesake: John Logan, Illinois politician
Seat: Postville (1839–1848); Mount Pulaski (1848–1855); Lincoln (1855–)

Land area: 618 square miles

Population (2020): 27,987

Population (historic): 2,634 (1840); 18,257 (1860); 21,296 (1880); 28,680 (1900); 28,863 (1930)

Periods of population growth: pre-1840–1910; 1930–1960; 1990s

Subdivisions: Three cities; eight villages; three CDPs; 17 townships

National Register listings: 12

Pre-1940 residences (estimated): 3,575 (29.6%)
Pre-1940 housing survival rate: 56.2%
Pre-1860 housing survival rate (1940): 11.1%

Farm housing in disrepair (1950): 6.7%

Nonfarm housing in disrepair (1950): 7%

Average farmhouse value (1930): $2,192
Average outbuilding value (1930): $2,417

Average farmhouse size (1940): 6.5 rooms
Number of farms (1920): 2,234
Average farm size (1920): 158.9 acres
Sources of settlement: Ohio, Germany, Kentucky, Pennsylvania, Indiana, and Ireland
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Lincoln

Namesake: Abraham Lincoln, U.S. president

Founding: 1853 (platting); 1854 (post office); 1857 (incorporation)

Population (2020): 13,288

Population (historic): 5,639 (1880); 8,962 (1900); 12,855 (1930)

Periods of population growth: pre-1880–1930; 1940–1970
Pre-1940 residences (estimated): 1,638 (25.6%)
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Outstanding Buildings

1. Mark Barrett House (c. 1855). 2172 1275th Road. Aetna. Greek Revival.
2. Laban Hoblit Farm (c. 1870/1910). 2459 2200th Road. Atlanta. Classical Revival.
3. Michael Beaver Farm (c. 1870). 767 1400th Road. Broadwell. Italianate.
4. Samuel Evans House (c. 1875). 1753 1200th Road. Chester. Italianate.
5. Theodore Lawrence Farm (c. 1855). 1035 700th Road. Elkhart.
6. *Oglehurst / Richard Oglesby Estate (1890–1892). 2 Crohurst Lane. Elkhart. Eclectic.
7. *John Gillett Farm (1871/1920s). 4 Drake's Lane. Elkhart. Tudor Revival.
8. Lewis Beaver House (c. 1875). 933 1575th Road. West Lincoln. Italianate.