Adams County, Indiana

Founding: 1836 (declared in 1835)
Parent county: Unorganized territory

Namesake: John Quincy Adams, U.S. president
Seat: Decatur (1836–)

Land area: 339 square miles

Population (2020): 35,809

Population (historic): 2,264 (1840); 9,252 (1860); 20,181 (1890); 19,957 (1930)

Periods of population growth: pre-1840–1900; 1930–2020

Subdivisions: Four cities; 12 townships

Pre-1940 residences (estimated): 4,201 (31.8%)
Pre-1940 housing survival rate: 68.1%
Pre-1860 housing survival rate (1940): 4.2%

Farm housing in disrepair (1950): 8.8%

Nonfarm housing in disrepair (1950): 4.8%
Average farmhouse value (1930): $1,514
Average outbuilding value (1930): $1,548

Average farmhouse size (1940): 7 rooms
Number of farms (1920): 2,328
Average farm size (1920): 78 acres
Sources of settlement: Ohio, Germany, Pennsylvania, and Switzerland

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Decatur

Namesake: Stephen Decatur, U.S. naval officer

Founding: 1836 (platting); 1837 (post office); 1853 (incorporation)

Population (2020): 9,913

Population (historic): 231 (1850); 858 (1870); 4,148 (1900); 5,156 (1930)

Periods of population growth: 1836–1980; 1990s; 2010s
Pre-1940 residences (estimated): 1,405 (32.3%)

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Outstanding Buildings

1. School Number Three (1884). 5989 West 300 South. French. Eastlake.
2. Augustus Kraner House (c. 1885). 11176 South 450 East. Jefferson. Italianate.
3. Muensterberg School (1912). 5010 South 200 West. Monroe. Romanesque.
4. Boeker Log House (c. 1850). 555 West 300 South. Monroe. Razed.
5. Zion Lutheran Church (1902). 10653 North 550 West. Preble. Gothic Revival.
   
6. Salem Reformed Church (1892). 7494 North 600 West. Preble. Gothic Revival.
7. St. Paul's Lutheran Church (1882). 4510 West 750 North. Preble. Gothic Revival.
8. St. John's Lutheran Church (1878). 11555 US Highway 27. Preble. Gothic Revival.
9. Charles Heckman House (1867–1868). 11591 Winchester Road. Preble. Italianate.
10. John Christen Farm (1875). 9100 North 000. Root. Italianate.
11. Gerhard Franz Log House (c. 1845). 1244 East 1100 North. Root. Razed.
12. John Lenhart House (1848). 6929 Piqua Road. Root. Greek Revival.
13. John Dirkson Farm (1871). 9960 US Highway 27. Root.
14. Elsias Dailey House (1862). 1717 Piqua Road. St. Marys. Greek Revival.
15. Schnepp School (1903). 7088 North 600 East. Union. Romanesque. Razed.
16. School Number Three (1903). 2990 North 200 West. Washington. Romanesque.

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