Logan County, Ohio

Founding: 1818
Parent county: Champaign

Namesake: Benjamin Logan, Kentucky militiaman
Seat: Bellefontaine (1820–)

Land area: 458 square miles

Population (2020): 46,150

Population (historic): 3,159 (1820); 19,162 (1850); 26,267 (1880); 28,981 (1930)

Periods of population growth: pre-1820–1900; 1930–2000

Subdivisions: One city; 12 villages; three CDPs; 17 townships

Pre-1940 residences (estimated): 6,154 (26.6%)
Pre-1940 housing survival rate: 56.8%
Pre-1860 housing survival rate (1940): 15.5%

Farm housing in disrepair (1950): 5.8%

Nonfarm housing in disrepair (1950): 4.6%

Average farmhouse value (1930): $1,334
Average outbuilding value (1930): $1,369

Average farmhouse size (1940): 6.8 rooms
Number of farms (1920): 2,825
Average farm size (1920): 78.5 acres
Sources of settlement: Virginia, Pennsylvania, and Ireland
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Bellefontaine

Namesake: A French phrase meaning "beautiful spring"

Founding: 1820 (platting); 1820 (post office); 1835 (incorporation)

Population (2020): 14,115

Population (historic): 170 (1820); 1,222 (1850); 3,998 (1880); 9,543 (1930)

Periods of population growth: 1820–1960; 1970–2020
Pre-1940 residences (estimated): 2,001 (32.5%)

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Outstanding Buildings

1. James Monary House (c. 1812). 2881 County Road 130. Harrison. Razed.
2. Martin Marmon House Ruins (c. 1820). 5320 County Road 153. Jefferson.
3. Benjamin Shoots House (1849). 3998 State Route 47. Jefferson. Greek Revival.
4. Aaron Brown House (1826/1850). 7426 State Route 292. Jefferson. Greek Revival. Razed.
5. Henry Taylor House (c. 1855). 2038 County Road 1. Lake.
6. House (1821). 1600 County Road 56. Lake. Federal.
7. Jacob Kiser Farm (c. 1850). 1314 Township Road 30. Liberty.
8. Daniel Koch House (c. 1845). 482 East Miami Street. Miami. Razed.
9. John Nash House (1858). 9800 County Road 47. Monroe. Italianate.
10. Mac-O-Chee / Donn Piatt House (1879–1881). 2223 State Route 287. Monroe. Flemish Revival.
11. Mac-A-Cheek / Abram Piatt House (1864–1871). 10051 Township Road 47. Monroe. Norman Revival.
12. Benjamin Piatt House (c. 1820). 10107 Township Road 47. Monroe.
13. William Enoch House (c. 1840). 1113 Township Road 174. Monroe.
14. John Rosebrook Farm (c. 1885). 9578 County Road 12. Rush Creek. Italianate.
15. House (mid- or late 19th century). 11407 Township Road 224. Stokes. Razed.
16. Joseph Rathmell House (c. 1855). 3939 State Route 235. Washington. Greek Revival. Razed.
17. Levi Evans House (c. 1825). 10016 Township Road 29. Zane. Razed.
18. Farm (c. 1825). 10241 Township Road 160. Zane. Razed.

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