Blackford County, Indiana

Founding: 1839 (declared in 1838)
Parent county: Jay

Namesake: Isaac Blackford, Indiana judge
Seat: Hartford City (1839–)

Land area: 165 square miles

Population (2020): 12,112

Population (historic): 1,226 (1840); 4,122 (1860); 8,020 (1880); 17,213 (1900); 13,617 (1930)

Periods of population growth: pre-1840–1900; 1930–1970

Subdivisions: Two cities; one town; four townships

Pre-1940 residences (estimated): 1,915 (31.7%)
Pre-1940 housing survival rate: 58.4%
Pre-1860 housing survival rate (1940): 3.2%

Farm housing in disrepair (1950): 5.2%

Nonfarm housing in disrepair (1950): 8.3%

Average farmhouse value (1930): $1,308
Average outbuilding value (1930): $1,254

Average farmhouse size (1940): 6.4 rooms
Number of farms (1920): 1,126
Average farm size (1920): 77.8 acres
Sources of settlement: Ohio and Pennsylvania

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Hartford City

Namesake: Unknown—perhaps Hartford, Connecticut

Founding: 1837 (platting); 1854 (post office); 1857 (incorporation)

Population (2020): 6,086

Population (historic): 250 (1850); 878 (1870); 5,912 (1900); 6,613 (1930)

Periods of population growth: pre-1850–1910; 1920–1970
Pre-1940 residences (estimated): 851 (28.5%)

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Outstanding Buildings

1. Thomas Markin Log House (c. 1860). 4595 North 600 East. Harrison.
2. House (c. 1880). 7945 East 500 South. Jackson. Italianate. Razed.
3. Dildine School (1921). 2933 State Route 26. Jackson. Craftsman.

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