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

National Register listings: 10

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 Log House (c. 1812). 2881 County Road 130. Harrison. Razed.
2. *Martin Marmon House (c. 1820). 5320 County Road 153. Jefferson.
3. *Jonathan 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. *Taylor 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 Log House (c. 1820). 10107 Township Road 47. Monroe.
13. William Enoch House (c. 1840). 1113 Township Road 174. Monroe.
14. Log House. Golliday Road, west of Township Road 93. Stokes. Razed.
15. Joseph Rathmell House (c. 1855). State Route 235, north of Township Road 215. Washington. Greek Revival. Razed.
16. Evans House (c. 1825). 10016 Township Road 29. Zane. Razed.
17. Lemuel Shaul Farm (c. 1825). 10241 Township Road 160. Zane. Razed.