IOWA Counties - with hyperlinks to County Websites

IOWA Counties

with hyperlinks to County Websites (offsite)

Blue indicates that county was not yet formed
Gray indicates that county was abolished

[1]

COUNTY ^PARENT COUNTY	DATE FORMED	1790	1800	1810	1820	1830	1840	1850	1860	1870
Adair ^	1855
Adams ^Pottawattamie	1853
Allamakee ^	1849
Appanoose ^	1846
Audubon ^	1855
Bancroft ^Unorganized (Delaware, Polk), *Boone	1851- abolished 1855
Benton ^	1846
Black Hawk ^	1853
Boone ^	1849
Bremer ^	1853
Buchanan ^	1846
Buena Vista ^	1859
Buncombe ^Woodbury	1851- renamed Lyon County 1861
Butler ^	1854
Calhoun ^Fox	1855
Carroll ^	1855
Cass ^	1853
Cedar ^	1838
Cerro Gordo ^	1855
Cherokee ^	1857
Chickasaw ^	1853
Clarke ^	1851
Clay ^	1858

[2]

COUNTY ^PARENT COUNTY	DATE FORMED	1790	1800	1810	1820	1830	1840	1850	1860	1870
Clayton ^	1838
Clinton ^	1840
Cook ^Des Moines, *Muscatine	1836- abolished 1838
Crawford ^	1855
Crocker ^Kossuth	1870 - abolished 1871
Dallas ^	1847
Davis ^	1844
Decatur ^	1850
Delaware ^	1844
Des Moines ^	1834
Dickinson ^	1858
Dubuque ^	1834
Emmet ^	1859
Fayette ^	1851
Floyd ^	1854
Fox ^Unorganized (Delaware, Polk)	1851 - Renamed Calhoun County 1853
Franklin ^	1855
Fremont ^	1850
Greene ^	1854
Grundy ^	1856
Gutherie ^	1851
Hamilton ^	1857
Hancock ^	1858

[3]

COUNTY ^PARENT COUNTY	DATE FORMED	1790	1800	1810	1820	1830	1840	1850	1860	1870
Hardin ^	1853
Harrison ^	1853
Henry ^	1837
Howard ^	1855
old Howard ^St. Louis, Washington, Unorganized (St. Charles)	1816 - later became part of Missouri teritory
Humboldt ^	1857
Ida ^	1855 or 1858
Iowa ^	1845
Jackson ^	1837
Jasper ^	1846
Jefferson ^	1839
Johnson ^	1838 - 1847
Keokuk ^	1844
Kishkekush ^Unorganized (Henry), Jefferson, Wapello	1843 - renamed Monroe County 1846
Kossuth ^	1855
Lee ^	1838
Linn ^	1839
Louisa ^	1837
Lucas ^	1894
Lyon ^originally called Buncombe	1872
Madison ^	1849
Mahaska ^	1844
Marion ^	1845

[4]

COUNTY ^PARENT COUNTY	DATE FORMED	1790	1800	1810	1820	1830	1840	1850	1860	1870
Marshall ^	1849
Mills ^	1851
Mitchell ^	1854
Monona ^	1854
Monroe ^Kishkekush	1845
Montgomery ^	1853
Muscatine ^	1837
O'Brien ^	1860
Osceola ^originally part of Woodbury	1871
Page ^	1851
Palo Alto ^	1858
Plymouth ^	1858
Pocahontas ^	1859
Polk ^	1846
Pottawattamie ^	1837
Poweshiek ^	1837
Ringgold ^	1855
Risley ^Unorganized (Delaware, Polk)	1851 - abolished 1853
Sac ^	1856
Scott ^	1837
Shelby ^	1853
Sioux ^	1860
Slaughter ^Henry, Louisa, Muscatine, Unorganized	1838 - renamed Washington County

[5]

COUNTY ^PARENT COUNTY	DATE FORMED	1790	1800	1810	1820	1830	1840	1850	1860	1870
Story ^	1853
Tama ^	1853
Taylor ^	1851
Union ^Clarke	1853
Van Buren ^	1838
Wahkaw ^Unorganized (Delaware, Polk)	1851 - renamed Woodbury County
Wapello ^	1844
Warren ^	1844
Washington ^Slaughter	1839
Wayne ^Des Moines	1851
Webster ^	1857
Winnebago ^	1857
Winneshiek ^	1851
Woodbury ^Wahkaw	1853
Worth ^Wahkaw, Osceola	1858
Wright ^	1855
Yell ^Unorganized (Delaware, Polk)	1851 - abolished 1853

Additions or Corrections? Email (please include county/ state with your Email)

04 Apr 2003


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