Putnam County, Ohio

Founding: 1834 (declared in 1820)
Parent county: Unorganized territory

Namesake: Israel Putnam, Continental Army general
Seats: Kalida (1834–1866); Ottawa (1866–)

Land area: 483 square miles

Population (2020): 34,451

Population (historic): 5,189 (1840); 17,081 (1870); 32,525 (1900); 25,074 (1930)

Periods of population growth: 1830–1900; 1940–2000

Subdivisions: 15 villages; one CDP; 15 townships

Pre-1940 residences (estimated): 3,641 (26.5%)
Pre-1940 housing survival rate: 56%
Pre-1860 housing survival rate (1940): 8.8%

Farm housing in disrepair (1950): 2.8%

Nonfarm housing in disrepair (1950): 4.5%

Average farmhouse value (1930): $1,507
Average outbuilding value (1930): $1,770
Average farmhouse size (1940): 7 rooms
Number of farms (1920): 3,232
Average farm size (1920): 80.3 acres
Sources of settlement: Germany, Pennsylvania, Switzerland, and Wales
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Ottawa

Namesake: The Ottawa people

Founding: 1833 (platting); 1839 (post office); 1861 (incorporation)

Population (2020): 4,456

Population (historic): 104 (1850); 1,293 (1880); 2,322 (1900); 2,169 (1930)

Periods of population growth: pre-1880–1900; 1930–1960; 1970–2010
Pre-1940 residences (estimated): 446 (21.9%)
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Outstanding Buildings

1. Nicholas Schroeder House (c. 1860). 13251 Road I. Greensburg. Razed.
2. Gerhart Meyer Farm (c. 1860). 11598 Road 10K. Ottawa. Greek Revival.
3. John Moening House (c. 1860). 12141 Road 11. Ottawa.
4. Our Lady of Good Counsel Convent (1853). 12341 Road J. Ottawa.
5. Holy Family Catholic Church (1915). 7359 State Route 109. Ottawa. Romanesque.
6. Michael Bridenbaugh Farm (c. 1880). 14282 Road 6. Riley.
7. John Clevenger House (1848). 17656 Road 16O. Sugar Creek. Razed.
8. Evan Reynolds Farm (c. 1895). 17249 Road 17N. Sugar Creek. Eastlake.
9. Robert Roberts House (1898). 16433 Old State Route 12. Sugar Creek. Queen Anne.
10. Risser House (c. 1905). 20901 State Route 115. Sugar Creek. Classical Revival.
11. Benjamin Clevenger House (1876). 16619 Road 16O. Union. Gothic Revival.

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