Fremont County, Iowa

Founding: 1849 (declared in 1847)
Parent county: Unorganized territory

Namesake: John Frémont, California politician
Seat: Austin (1849–1851); Sidney (1851–)

Land area: 511 square miles

Population (2020): 6,605

Population (historic): 1,244 (1850); 11,174 (1870); 16,842 (1890); 15,623 (1910); 15,533 (1930)

Periods of population growth: pre-1850–1880; 1890s; 1970s

Subdivisions: Nine cities; three CDPs; 13 townships

National Register listings: Nine

Pre-1940 residences (estimated): 1,298 (37.6%)
Pre-1940 housing survival rate: 36.3%
Pre-1860 housing survival rate (1940): 3.8%

Farm housing in disrepair (1950): 6.1%

Nonfarm housing in disrepair (1950): 4.7%

Average farmhouse value (1930): $2,118
Average outbuilding value (1930): $2,001
Average farmhouse size (1940): 5.8 rooms
Number of farms (1920): 1,858
Average farm size (1920): 137 acres
Sources of settlement: Iowa, Illinois, Ohio, Pennsylvania, Germany, Wisconsin, New York, Indiana, and Ireland
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Sidney

Namesake: Sidney, Ohio

Founding: 1851 (platting as Dayton); 1851 (post office); 1870 (incorporation)

Population (2020): 1,070

Population (historic): 423 (1860); 855 (1880); 1,143 (1900); 1,074 (1930)

Periods of population growth: 1851–1880; 1890s; 1910s; 1930s; 1960–1980; 1990s
Pre-1940 residences (estimated): 200 (35.3%)
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Outstanding Buildings

1. *Robert McKean House (c. 1870). 3043 305th Road. Madison.
2. Peoria Stock Farm / Merryman Parrish Farm (c. 1875). 3825 150th Road. Monroe. Italianate.
3. Ransdell Baylor Farm (c. 1870). 1816 Bluff Road. Scott. Italianate.
4. *Jason Rector Farm (1859). 2174 Bluff Road. Sidney.