Clark County, Ohio

Founding: 1818
Parent counties: Champaign, Greene, and Madison

Namesake: George Rogers Clark, Virginia militia officer
Seat: Springfield (1818–)

Land area: 397 square miles

Population (2020): 136,001

Population (historic): 9,533 (1820); 22,178 (1850); 41,948 (1880); 58,939 (1900); 90,936 (1930)

Periods of population growth: pre-1820–1970

Subdivisions: Two cities; eight villages; five CDPs; 10 townships

Pre-1940 residences (estimated): 15,163 (24.8%)
Pre-1940 housing survival rate: 54.9%
Pre-1860 housing survival rate (1940): 30.1%

Farm housing in disrepair (1950): 3.7%

Nonfarm housing in disrepair (1950): 5.2%
Average farmhouse value (1930): $2,191
Average outbuilding value (1930): $1,784
Average farmhouse size (1940): 6.8 rooms
Number of farms (1920): 2,487
Average farm size (1920): 82.1 acres
Sources of settlement: Pennsylvania, Virginia, Maryland, Ireland, and England
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Springfield

Naming: A traditional name

Founding: 1801 (platting); 1804 (post office); 1827 (incorporation)

Population (2020): 58,662

Population (historic): 593 (1810); 5,108 (1850); 20,730 (1880); 68,743 (1930)

Periods of population growth: 1801–1820; 1830–1960
Pre-1940 residences (estimated): 11,752 (41.2%)

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Outstanding Buildings

1. John Bowman Farm (c. 1855). 515 Bischoff Road. Bethel. Greek Revival.
2. Scarff Estate (1902). 407 Dayton–Lakeview Road. Bethel. Classical Revival.
3. Jacob Huffman House (1825–1832). 4830 Lower Valley Pike. Bethel.
4. Melyn Layton House (c. 1840). 7240 Lower Valley Pike. Bethel. Greek Revival.
5. Benjamin Miller Farm (c. 1840). 11716 Lower Valley Pike. Bethel.
6. Olive Branch School (1914). 9710 West National Road. Bethel. Craftsman.
7. Daniel Hertzler Farm (1854). 930 South Tecumseh Road. Bethel. Greek Revival.
8. Thomas Nawman Farm (c. 1835). 2235 Upper Valley Pike. German. Federal. Razed.
9. Thomas Elder Farm (c. 1835). 6107 North River Road. Green. Federal.
10. William Estle House (c. 1830). 7646 North River Road. Green. Federal.
11. George Elder Farm (c. 1835). 7391 South Pitchin Road. Green. Federal.
12. Robert Tindall Farm (c. 1880). 3845 South River Road. Green. Italianate.
13. Philip Marquart Farm (c. 1827). 743 West Sparrow Road. Green. Federal.
14. John Hume House (c. 1835). 4370 Tanyard Road. Green. Federal.
15. Buena Vista Tavern (1836). 8518 East National Road. Harmony. Greek Revival.
16. Adolphus Smith House (c. 1860). 7055 Dayton–Springfield Road. Mad River. Italianate.
17. Richard Collier Farm (c. 1835). 4324 Fairfield Pike. Mad River.
18. Henry Snyder House (c. 1870). 1734 South Tecumseh Road. Mad River. Italianate.
19. William Wildman Farm (c. 1875). 6770 Old Columbus Road. Madison. Italianate.
20. Edward Merritt Farm (c. 1870). 8391 Old Springfield Road. Madison. Italianate.
21. Alexander Comrie House (1883). 9880 South Charleston Pike. Madison. Italianate.
22. Green Plain Friends Meeting House (1843). 6737 South Charleston–Clifton Road. Madison.
23. Jeremiah Warder House (c. 1830). 2050 East Home Road. Moorefield.
24. George Yeazell House (c. 1840). 2955 Mahar Road. Moorefield. Greek Revival.
25. Thomas Wilson Farm (c. 1860). 4870 Mumper Road. Moorefield. Gothic Revival.
26. David Crabill House (c. 1830). Overlook Drive, near Brown Reservoir. Moorefield.
27. Joseph Sultzbach House (c. 1840). 3312 Urbana Road. Moorefield.
28. William Hunt House (1828). 4690 Urbana Road. Moorefield. Federal.
29. George Stafford Farm (c. 1860). 2550 Addison–New Carlisle Road. Pike. Gothic Revival.
30. Findley Stafford Farm (c. 1855). 12091 Stafford Road. Pike. Greek Revival/Italianate.
31. James Taylor House (c. 1840). 904 North Bird Road. Springfield. Federal.
32. John Perrin House (c. 1875). 780 West Leffel Lane. Springfield. Italianate.
33. Jonathan Donnel House (1811). Lower Valley Pike. Springfield. Ruined.
34. Peter Sintz House (c. 1855). 3115 West National Road. Springfield. Greek Revival.
35. Edmund Ogden House (1828). 325 Old Columbus Road. Springfield. Federal.
36. Zebedee Tuttle House (c. 1875). 707 Old Columbus Road. Springfield. Italianate.
37. Houck House (c. 1875). 1132 Old Columbus Road. Springfield. Italianate.
38. John McClintock House (c. 1835). 1651 West Possum Road. Springfield. Greek Revival.
39. Henry Snyder House (c. 1835/1900). 361 Upper Valley Pike. Springfield. Federal/Classical Revival.

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