Clinton County, Iowa

 

Founding: 1840 (declared in 1837)
Parent county: Dubuque

Namesake: DeWitt Clinton, New York governor
Seat: Camanche (1840–1842); DeWitt (1842–1869); Clinton (1869–)

Land area: 695 square miles

Population (2020): 46,460

Population (historic): 821 (1840); 18,938 (1860); 36,763 (1880); 43,832 (1900); 44,377 (1930)

Periods of population growth: pre-1840–1910; 1920–1980

Subdivisions: 14 cities; 18 townships

National Register listings: 31

Pre-1940 residences (estimated): 7,444 (33.8%)
Pre-1940 housing survival rate: 66.7%
Pre-1860 housing survival rate (1940): 7.3%

Farm housing in disrepair (1950): 2%

Nonfarm housing in disrepair (1950): 5.3%

Average farmhouse value (1930): $2,660
Average outbuilding value (1930): $3,206
Average farmhouse size (1940): 7.5 rooms
Number of farms (1920): 2,729
Average farm size (1920): 134.1 acres
Sources of settlement: Germany, New York, Illinois, Pennsylvania, Ohio, Virginia, Ireland, England, and Norway
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Clinton

Namesake: DeWitt Clinton, New York governor

Founding: 1837 (platting of Lyons); 1855 (platting of Clinton); 1855 (post office); 1857 (incorporation)

Population (2020): 24,469

Population (historic): 6,129 (1870); 13,619 (1890); 25,577 (1910); 25,726 (1930)

Periods of population growth: 1855–1910; 1920–1970
Pre-1940 residences (estimated): 4,844 (38.9%)
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Outstanding Buildings

1. *Peter Dierks Farm (c. 1865). 4221 State Route 136. Hampshire.
2. *Gjert Johnson Farm (1878). 2566 190th Road. Olive. Italianate.
3. *Cherry Bank / Augustus Ankeny House (1871). 1458 Main Avenue. Spring Valley. Italianate.
4. St. Joseph Catholic Church (1896). 2885 145th Road. Waterford. Gothic Revival.