DeKalb County, Indiana

Founding: 1837
Parent county: Unorganized territory

Namesake: Johann de Kalb, Continental Army general
Seat: Auburn (1837–)

Land area: 363 square miles

Population (2010): 42,223

Population (historic): 1,968 (1840); 13,880 (1860); 20,225 (1880); 25,711 (1900); 24,911 (1930)

Periods of population growth: 1840–1890; 1990s

Subdivisions: Three cities; six towns; 15 townships

National Register listings: 29

Pre-1940 residences (estimated): 5,499 (30.9%)
Pre-1940 housing survival rate: 73.3%
Pre-1860 housing survival rate (1940): 9.9%

Farm housing in disrepair (1950): 9%

Nonfarm housing in disrepair (1950): 7.5%

Average farmhouse value (1930): $1,601
Average outbuilding value (1930): $1,485

Average farmhouse size (1940): 7.3 rooms
Number of farms (1920): 2,461
Average farm size (1920): 73.7 acres
Sources of settlement: Ohio, Pennsylvania, Germany, and New York

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Auburn

Namesake: Unknown

Founding: 1836 (platting); 1839 (post office); 1849 (incorporation)

Population (2010): 13,086

Population (historic): 260 (1850); 677 (1870); 3,396 (1900); 5,088 (1930)

Periods of population growth: 1850s; 1870–1920; 1960s; 1980–2000
Pre-1940 residences (estimated): 1,437 (23.6%)

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Outstanding Buildings

1. Log House (c. 1860?). 7098 County Road 19. Butler.
2. *William Cornell Farm (c. 1863). 2132 County Road 68. Butler. Italianate.
3. Anthony Zonker Farm (c. 1880). 841 County Road 16. Fairfield. Italianate.
4. Firestone House (c. 1870). 6627 County Road 16. Franklin.
5. Gramling Log House (c. 1845?). County Road 4. Smithfield. Razed.
6. Kelley Farm (c. 1865). 4275 County Road 22. Smithfield. Italianate/Gothic Revival.
7. Rempis Farm (c. 1870). 2360 County Road 31. Smithfield. Italianate.
8. Hamman House (1847). 949 County Road 35. Smithfield.
9. Kelley Farm (c. 1870). 2202 State Route 427. Smithfield. Italianate.
10. John Brandon House (c. 1850). 819 North Indiana Avenue. Union. Greek Revival.
11. House (c. 1910). 1000 North Indiana Avenue. Union. Classical Revival.
12. Pepple House (c. 1860). 2214 North Main Street. Union. Gothic Revival.
13. Zurbrugg House (c. 1855). 3080 County Road 65. Wilmington.