Henry County, Ohio

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

Namesake: Patrick Henry, Virginia politician
Seat: Napoleon (1834–)

Land area: 416 square miles

Population (2020): 27,662

Population (historic): 2,503 (1840); 14,028 (1870); 27,282 (1900); 22,524 (1930)

Periods of population growth: 1830–1900; 1930s; 1950–2010

Subdivisions: One city; eight villages; one CDP; 13 townships

National Register listings: Four

Pre-1940 residences (estimated): 4,161 (34.8%)
Pre-1940 housing survival rate: 64.2%
Pre-1860 housing survival rate (1940): 7.8%

Farm housing in disrepair (1950): 2.4%

Nonfarm housing in disrepair (1950): 4.6%

Average farmhouse value (1930): $1,680
Average outbuilding value (1930): $1,814
Average farmhouse size (1940): 7.2 rooms
Number of farms (1920): 2,891
Average farm size (1920): 77 acres
Sources of settlement: Germany, Pennsylvania, and New York
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Napoleon

Namesake: Napoleon Bonaparte, French emperor

Founding: 1832 (platting); 1835 (post office)

Population (2020): 8,862

Population (historic): 566 (1850); 2,018 (1870); 3,639 (1900); 4,545 (1930)

Periods of population growth: pre-1850–1880; 1890–2000
Pre-1940 residences (estimated): 1,077 (26.8%)
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Outstanding Buildings

1. *Daniel Warner House (1893). 6447 Township Road O4. Damascus. Eastlake.
2. *Jennings Farm (c. 1855). Q429 State Route 65. Damascus. Greek Revival.
3. *Samuel King Farm (1882). 5120 State Route 110. Damascus. Italianate.
4. *Levi King Farm (1882). 5355 State Route 110. Damascus. Italianate.
5. *House (c. 1875). 1449 County Road P. Damascus. Italianate/Gothic Revival. Razed.
6. Lyman Back Farm (c. 1850). 15472 State Route 424. Flat Rock. Greek Revival.
7. Farm (c. 1895). 15718 State Route 424. Flat Rock. Queen Anne.
8. *John Vocke House (c. 1865). 690 East Riverview Avenue. Liberty. Gothic Revival. Razed.
9. William Williams Farm (c. 1855). S521 County Road 10. Liberty. Greek Revival.
10. Peter Ritter Farm (1882). O335 State Route 108. Napoleon. Italianate.
11. Sacred Heart Catholic Church (1888). 13779 County Road Y. Pleasant. Gothic Revival.
12. *Michael Connolly Farm (c. 1875). T009 County Road 4A. Washington. Italianate.