Wikipedia:

list of counties in Iowa

This is a list of counties in Iowa.

Alphabetical

County
 FIPS Code[1] County Seat
[2]		 Established
[3]		 Formed from
[4]		 Etymology
[5][3]		 Population
(2000) [2]		 Area
[2]		 Map
 
Adair County 001 Greenfield 01851-01-15 15 January 1851 Cass County John Adair (1757-1840), sixth governor of Kentucky . 569 mi²
(916 km²)		 State map highlighting Adair County
Adams County 003 Corning 01851-01-15 15 January 1851 Taylor County John Adams, second president of the United States (1797-1801) . 424 mi²
(682 km²)		 State map highlighting Adams County
Allamakee County 005 Waukon 01847-02-20 20 February 1847 Clayton County Allen Magee (or Allan Makee), an early Indian trader . 640 mi²
(1,030 km²)		 State map highlighting Allamakee County
Appanoose County 007 Centerville 01843-02-17 17 February 1843 Davis County Appanoose, Native American who headed peace party in the Black Hawk War . 496 mi²
(798 km²)		 State map highlighting Appanoose County
Audubon County 009 Audubon 01851-01-15 15 January 1851 Black Hawk County and Cass County John James Audubon (1785-1851), ornithologist and artist . 443 mi²
(713 km²)		 State map highlighting Audubon County
Benton County 011 Vinton 01837-12-21 21 December 1837 Native American lands and Wisconsin Territory Thomas Hart Benton, U.S. senator . 716 mi²
(1,152 km²)		 State map highlighting Benton County
Black Hawk County 013 Waterloo 01843-02-17 17 February 1843 Delaware County Black Hawk, chief of Fox and Sac Indians and leader in the Black Hawk War . 567 mi²
(912 km²)		 State map highlighting Black Hawk County
Boone County 015 Boone 01846-01-13 13 January 1846 Polk County Nathan Boone (1782-1863), one of the first to survey Iowa . 572 mi²
(921 km²)		 State map highlighting Boone County
Bremer County 017 Waverly 01851-01-15 15 January 1851 Native American lands and Winnebago County Frederika Bremer (1801-1865), Swedish poet and author . 428 mi²
(689 km²)		 State map highlighting Bremer County
Buchanan County 019 Independence 01837-12-21 21 December 1837 Delaware County and Wisconsin Territory James Buchanan, fifteenth president (1857-1861) . 571 mi²
(919 km²)		 State map highlighting Buchanan County
Buena Vista County 021 Storm Lake 01851-01-15 15 January 1851 Clay County and Sac County Buena Vista, a battle during the Mexican-American War . 575 mi²
(925 km²)		 State map highlighting Buena Vista County
Butler County 023 Allison 01851-01-15 15 January 1851 Black Hawk County and Buchanan County William Orlando Butler (1791-1880), unsuccessful candidate for Vice President . 580 mi²
(933 km²)		 State map highlighting Butler County
Calhoun County 025 Rockwell City 01851-01-15 15 January 1851  ? John Caldwell Calhoun, Vice President (1825-1832) . 570 mi²
(917 km²)		 State map highlighting Calhoun County
Carroll County 027 Carroll 01851-01-15 15 January 1851 Guthrie County Charles Carroll (1737-1832), longest lived signer of the Declaration of Independence . 569 mi²
(916 km²)		 State map highlighting Carroll County
Cass County 029 Atlantic 01851-01-15 15 January 1851 Pottawattamie County Lewis Cass, Senator from Michigan and unsuccessful candidate for president (1848) . 564 mi²
(908 km²)		 State map highlighting Cass County
Cedar County 031 Tipton 01837-12-21 21 December 1837 Wisconsin Territory Red Cedar River, river that runs through county . 580 mi²
(933 km²)		 State map highlighting Cedar County
Cerro Gordo County 033 Mason City 01851-01-15 15 January 1851 Floyd County Cerro Gordo, site of battle during the Mexican-American War . 568 mi²
(914 km²)		 State map highlighting Cerro Gordo County
Cherokee County 035 Cherokee 01851-01-15 15 January 1851 Crawford County Cherokee Native American tribe . 577 mi²
(929 km²)		 State map highlighting Cherokee County
Chickasaw County 037 New Hampton 01851-01-15 15 January 1851 Fayette County Chickasaw Native American tribe . 505 mi²
(813 km²)		 State map highlighting Chickasaw County
Clarke County 039 Osceola 01846-01-13 13 January 1846 Lucas County James Clarke, third governor of Iowa Territory (1845-1846) . 431 mi²
(694 km²)		 State map highlighting Clarke County
Clay County 041 Spencer 01851-01-15 15 January 1851 Native American lands Lieutenant Colonel Henry Clay, Jr. (1807-1847), hero of the Mexican-American War . 569 mi²
(916 km²)		 State map highlighting Clay County
Clayton County 043 Elkader 01837-12-21 21 December 1837 Dubuque County and Wisconsin Territory John M. Clayton (1796-1856), U.S. senator from Delaware . 779 mi²
(1,254 km²)		 State map highlighting Clayton County
Clinton County 045 Clinton 01837-12-21 21 December 1837 Dubuque County and Wisconsin Territory DeWitt Clinton (1769-1828), governor of New York . 695 mi²
(1,118 km²)		 State map highlighting Clinton County
Crawford County 047 Denison 01851-01-15 15 January 1851 Shelby County  ? . 714 mi²
(1,149 km²)		 State map highlighting Crawford County
Dallas County 049 Adel 01846-01-13 13 January 1846 Polk County  ? . 586 mi²
(943 km²)		 State map highlighting Dallas County
Davis County 051 Bloomfield 01843-02-17 17 February 1843 Van Buren County  ? . 503 mi²
(810 km²)		 State map highlighting Davis County
Decatur County 053 Leon 01846-01-13 13 January 1846 Appanoose County  ? . 532 mi²
(856 km²)		 State map highlighting Decatur County
Delaware County 055 Manchester 01837-12-21 21 December 1837 Dubuque County and Wisconsin Territory  ? . 578 mi²
(930 km²)		 State map highlighting Delaware County
Des Moines County 057 Burlington 01834-09-06 6 September 1834 Michigan Territory and Wisconsin Territory  ? . 416 mi²
(669 km²)		 State map highlighting Des Moines County
Dickinson County 059 Spirit Lake 01851-01-15 15 January 1851 Kossuth County  ? . 381 mi²
(631 km²)		 State map highlighting Dickinson County
Dubuque County 061 Dubuque 01834-09-06 6 September 1834 Michigan Territory and Wisconsin Territory  ? . 608 mi²
(978 km²)		 State map highlighting Dubuque County
Emmet County 063 Estherville 01851-01-15 15 January 1851 Dickinson County and Kossuth County  ? . 396 mi²
(637 km²)		 State map highlighting Emmet County
Fayette County 065 West Union 01837-12-21 21 December 1837 Clayton County and Wisconsin Territory  ? . 731 mi²
(1,176 km²)		 State map highlighting Fayette County
Floyd County 067 Charles City 01851-01-15 15 January 1851 Chickasaw County  ? . 501 mi²
(806 km²)		 State map highlighting Floyd County
Franklin County 069 Hampton 01851-01-15 15 January 1851 Chickasaw County  ? . 582 mi²
(937 km²)		 State map highlighting Franklin County
Fremont County 071 Sidney 01847-02-24 24 February 1847 Pottawattamie County  ? . 511 mi²
(822 km²)		 State map highlighting Fremont County
Greene County 073 Jefferson 01851-01-15 15 January 1851 Dallas County  ? . 568 mi²
(914 km²)		 State map highlighting Greene County
Grundy County 075 Grundy Center 01851-01-15 15 January 1851 Black Hawk County  ? . 503 mi²
(810 km²)		 State map highlighting Grundy County
Guthrie County 077 Guthrie Center 01851-07-08 8 July 1851 Jackson County  ? . 591 mi²
(951 km²)		 State map highlighting Guthrie County
Hamilton County 079 Webster City 01856-12-22 22 December 1856 Webster County  ? . 577 mi²
(929 km²)		 State map highlighting Hamilton County
Hancock County 081 Garner 01851-01-15 15 January 1851 Wright County  ? . 571 mi²
(919 km²)		 State map highlighting Hancock County
Hardin County 083 Eldora 01851-01-15 15 January 1851 Black Hawk County  ? . 569 mi²
(916 km²)		 State map highlighting Hardin County
Harrison County 085 Logan 01851-01-15 15 January 1851 Pottawattamie County  ? . 697 mi²
(1,122 km²)		 State map highlighting Harrison County
Henry County 087 Mount Pleasant 01836-12-07 7 December 1836 Wisconsin Territory  ? . 434 mi²
(698 km²)		 State map highlighting Henry County
Howard County 089 Cresco 01851-01-15 15 January 1851 Chickasaw County  ? . 473 mi²
(761 km²)		 State map highlighting Howard County
Humboldt County 091 Dakota City 01857-02-26 26 February 1857 Webster County  ? . 434 mi²
(698 km²)		 State map highlighting Humboldt County
Ida County 093 Ida Grove 01851-01-15 15 January 1851 Cherokee County  ? . 432 mi²
(695 km²)		 State map highlighting Ida County
Iowa County 095 Marengo 01843-02-17 17 February 1843 Washington County  ? . 586 mi²
(943 km²)		 State map highlighting Iowa County
Jackson County 097 Maquoketa 01837-12-21 21 December 1837 Wisconsin Territory  ? . 636 mi²
(1,024 km²)		 State map highlighting Jackson County
Jasper County 099 Newton 01846-01-13 13 January 1846 Mahaska County  ? . 730 mi²
(1,175 km²)		 State map highlighting Jasper County
Jefferson County 101 Fairfield 01839-01-21 21 January 1839 Native American lands  ? . 435 mi²
(700 km²)		 State map highlighting Jefferson County
Johnson County 103 Iowa City 01837-12-21 21 December 1837 Des Moines County, Iowa and Wisconsin Territory  ? . 614 mi²
(988 km²)		 State map highlighting Johnson County
Jones County 105 Anamosa 01837-12-21 21 December 1837 Wisconsin Territory  ? . 575 mi²
(925 km²)		 State map highlighting Jones County
Keokuk County 107 Sigourney 01837-12-21 21 December 1837 Washington County  ? . 579 mi²
(932 km²)		 State map highlighting Keokuk County
Kossuth County 109 Algona 01851-01-15 15 January 1851 Webster County  ? . 973 mi²
(1,566 km²)		 State map highlighting Kossuth County
Lee County 111 Fort Madison 01836-12-07 7 December 1836 Des Moines County  ? . 517 mi²
(832 km²)		 State map highlighting Lee County
Linn County 113 Cedar Rapids 01837-12-21 21 December 1837 Wisconsin Territory  ? . 718 mi²
(1,156 km²)		 State map highlighting Linn County
Louisa County 115 Wapello 01836-12-07 7 December 1836 Des Moines County  ? . 402 mi²
(647 km²)		 State map highlighting Louisa County
Lucas County 117 Chariton 01846-01-13 13 January 1846 Monroe County  ? . 431 mi²
(694 km²)		 State map highlighting Lucas County
Lyon County 119 Rock Rapids 01851-01-15 15 January 1851 Woodbury County, Iowa  ? . 588 mi²
(946 km²)		 State map highlighting Lyon County
Madison County 121 Winterset 01846-01-13 13 January 1846 Polk County  ? . 561 mi²
(903 km²)		 State map highlighting Madison County
Mahaska County 123 Oskaloosa 01843-02-17 17 February 1843 Fox and Sac Indian lands  ? . 571 mi²
(919 km²)		 State map highlighting Mahaska County
Marion County 125 Knoxville 01845-06-10 10 June 1845 Washington County  ? . 554 mi²
(892 km²)		 State map highlighting Marion County
Marshall County 127 Marshalltown 01846-01-13 13 January 1846 Jasper County  ? . 572 mi²
(921 km²)		 State map highlighting Marshall County
Mills County 129 Glenwood 01851-01-15 15 January 1851 Pottawattamie County  ? . 437 mi²
(703 km²)		 State map highlighting Mills County
Mitchell County 131 Osage 01851-01-15 15 January 1851 Chickasaw County  ? . 469 mi²
(755 km²)		 State map highlighting Mitchell County
Monona County 133 Onawa 01851-01-15 15 January 1851 Harrison County  ? . 693 mi²
(1,115 km²)		 State map highlighting Monona County
Monroe County 135 Albia 01843-02-17 17 February 1843  ?  ? . 433 mi²
(697 km²)		 State map highlighting Monroe County
Montgomery County 137 Red Oak 01851-01-15 15 January 1851 Polk County  ? . 424 mi²
(682 km²)		 State map highlighting Montgomery County
Muscatine County 139 Muscatine 01836-12-07 7 December 1836 Des Moines County  ? . 439 mi²
(707 km²)		 State map highlighting Muscatine County
O'Brien County 141 Primghar 01851-01-15 15 January 1851 Cherokee County  ? . 573 mi²
(922 km²)		 State map highlighting O'Brien County
Osceola County 143 Sibley 01851-01-15 15 January 1851 Woodbury County  ? . 399 mi²
(642 km²)		 State map highlighting Osceola County
Page County 145 Clarinda 01847-02-24 24 February 1847 Pottawattamie County  ? . 535 mi²
(861 km²)		 State map highlighting Page County
Palo Alto County 147 Emmetsburg 01851-01-15 15 January 1851 Kossuth County  ? . 564 mi²
(908 km²)		 State map highlighting Palo Alto County
Plymouth County 149 Le Mars 01851-01-15 15 January 1851 Woodbury County  ? . 864 mi²
(1,390 km²)		 State map highlighting Plymouth County
Pocahontas County 151 Pocahontas 01851-01-15 15 January 1851 Greene County and Humboldt County  ? . 578 mi²
(930 km²)		 State map highlighting Pocahontas County
Polk County 153 Des Moines 01846-01-13 13 January 1846 Native American lands  ? . 570 mi²
(917 km²)		 State map highlighting Polk County
Pottawattamie County 155 Council Bluffs 01847-02-24 24 February 1847 Native American lands  ? . 954 mi²
(1,535 km²)		 State map highlighting Pottawattamie County
Poweshiek County 157 Montezuma 01843-02-17 17 February 1843 Mesquakie Indian lands  ? . 585 mi²
(941 km²)		 State map highlighting Poweshiek County
Ringgold County 159 Mount Ayr 01847-02-24 24 February 1847 Taylor County  ? . 538 mi²
(866 km²)		 State map highlighting Ringgold County
Sac County 161 Sac City 01851-01-15 15 January 1851 Greene County  ? . 576 mi²
(927 km²)		 State map highlighting Sac County