Ohio County, Kentucky

Founding: 1799
Parent county: Hardin

Namesake: The Ohio River
Seat: Hartford (1799–)

Land area: 587 square miles

Population (2020): 23,772

Population (historic): 1,223 (1800); 6,592 (1840); 15,561 (1870); 27,287 (1900); 24,469 (1930)

Periods of population growth: pre-1800–1910; 1960–1980; 1990–2010

Subdivisions: Six cities; one CDP

Pre-1940 residences (estimated): 813 (7.9%)
Pre-1940 housing survival rate: 20.5%
Pre-1860 housing survival rate (1940): 15.2%

Farm housing in disrepair (1950): 22.4%

Nonfarm housing in disrepair (1950): 18.5%

Average farmhouse value (1930): $487
Average outbuilding value (1930): $273
Average farmhouse size (1940): 4.1 rooms
Number of farms (1920): 4,112
Average farm size (1920): 53.2 acres
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Hartford

Namesake: Fort Hartford, which once existed near the city site

Founding: 1798 (platting); 1801 (post office); 1808 (incorporation)

Population (2020): 2,668

Population (historic): 74 (1800); 309 (1840); 511 (1870); 785 (1900); 1,106 (1930)

Periods of population growth: pre-1800–2010
Pre-1940 residences (estimated): 92 (8.2%)
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Outstanding Buildings

1. Charles Wallace House (c. 1815). Utley Drive, west of State Route 69. Razed.

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