Download Excel File List of Counties in Iowa

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S.No.,County,FIPS code ,County seat,Area,Population,Est.,Formed from1,Adair County,001,Greenfield,"569sqmi(1,474km)","7,541","Jan 15, 1851",Cass County2,Adams County,003,Corning,"424sqmi(1,098km)","3,641","Jan 15, 1851",Taylor County3,Allamakee County,005,Waukon,"640sqmi(1,658km)","13,926","Feb 20, 1847",Clayton County4,Appanoose County,007,Centerville,"496sqmi(1,285km)","12,257","Feb 17, 1843",Davis County5,Audubon County,009,Audubon,"443sqmi(1,147km)","5,635","Jan 15, 1851",Black Hawk County and Cass County6,Benton County,011,Vinton,"716sqmi(1,854km)","25,691","Dec 21, 1837",Native American lands and Wisconsin Territory7,Black Hawk County,013,Waterloo,"567sqmi(1,469km)","130,368","Feb 17, 1843",Delaware County8,Boone County,015,Boone,"572sqmi(1,481km)","26,723","Jan 13, 1846",Polk County9,Bremer County,017,Waverly,"428sqmi(1,109km)","25,081","Jan 15, 1851",Native American lands and Winnebago County10,Buchanan County,019,Independence,"571sqmi(1,479km)","20,657","Dec 21, 1837",Delaware County and Wisconsin Territory11,Buena Vista County,021,Storm Lake,"575sqmi(1,489km)","20,771","Jan 15, 1851",Clay County and Sac County12,Butler County,023,Allison,"580sqmi(1,502km)","14,332","Jan 15, 1851",Black Hawk County and Buchanan County13,Calhoun County,025,Rockwell City,"570sqmi(1,476km)","9,915","Jan 15, 1851",Fox County (renamed)14,Carroll County,027,Carroll,"569sqmi(1,474km)","20,692","Jan 15, 1851",Guthrie County15,Cass County,029,Atlantic,"564sqmi(1,461km)","13,050","Jan 15, 1851",Pottawattamie County16,Cedar County,031,Tipton,"580sqmi(1,502km)","18,410","Dec 21, 1837",Wisconsin Territory17,Cerro Gordo County,033,Mason City,"568sqmi(1,471km)","42,706","Jan 15, 1851",Floyd County18,Cherokee County,035,Cherokee,"577sqmi(1,494km)","11,503","Jan 15, 1851",Crawford County19,Chickasaw County,037,New Hampton,"505sqmi(1,308km)","11,887","Jan 15, 1851",Fayette County20,Clarke County,039,Osceola,"431sqmi(1,116km)","9,785","Jan 13, 1846",Lucas County21,Clay County,041,Spencer,"569sqmi(1,474km)","16,440","Jan 15, 1851",Native American lands22,Clayton County,043,Elkader,"779sqmi(2,018km)","16,998","Dec 21, 1837",Dubuque County and Wisconsin Territory23,Clinton County,045,Clinton,"695sqmi(1,800km)","46,463","Dec 21, 1837",Dubuque County and Wisconsin Territory24,Crawford County,047,Denison,"714sqmi(1,849km)","16,193","Jan 15, 1851",Shelby County25,Dallas County,049,Adel,"586sqmi(1,518km)","103,796","Jan 13, 1846",Polk County26,Davis County,051,Bloomfield,"503sqmi(1,303km)","9,138","Feb 17, 1843",Van Buren County27,Decatur County,053,Leon,"532sqmi(1,378km)","7,659","Jan 13, 1846",Appanoose County28,Delaware County,055,Manchester,"578sqmi(1,497km)","17,510","Dec 21, 1837",Dubuque County and Wisconsin Territory29,Des Moines County,057,Burlington,"416sqmi(1,077km)","38,491","Sep 6, 1834",Michigan Territory and Wisconsin Territory30,Dickinson County,059,Spirit Lake,"381sqmi(987km)","17,851","Jan 15, 1851",Kossuth County31,Dubuque County,061,Dubuque,"608sqmi(1,575km)","98,718","Sep 6, 1834",Michigan Territory and Wisconsin Territory32,Emmet County,063,Estherville,"396sqmi(1,026km)","9,321","Jan 15, 1851",Dickinson County and Kossuth County33,Fayette County,065,West Union,"731sqmi(1,893km)","19,258","Dec 21, 1837",Clayton County and Wisconsin Territory34,Floyd County,067,Charles City,"501sqmi(1,298km)","15,413","Jan 15, 1851",Chickasaw County35,Franklin County,069,Hampton,"582sqmi(1,507km)","9,952","Jan 15, 1851",Chickasaw County36,Fremont County,071,Sidney,"511sqmi(1,323km)","6,567","Feb 24, 1847",Pottawattamie County37,Greene County,073,Jefferson,"568sqmi(1,471km)","8,717","Jan 15, 1851",Dallas County38,Grundy County,075,Grundy Center,"503sqmi(1,303km)","12,347","Jan 15, 1851",Black Hawk County39,Guthrie County,077,Guthrie Center,"591sqmi(1,531km)","10,567","Jul 8, 1851",Jackson County40,Hamilton County,079,Webster City,"577sqmi(1,494km)","14,887","Dec 22, 1856",Webster County41,Hancock County,081,Garner,"571sqmi(1,479km)","10,663","Jan 15, 1851",Wright County42,Hardin County,083,Eldora,"569sqmi(1,474km)","16,708","Jan 15, 1851",Black Hawk County43,Harrison County,085,Logan,"697sqmi(1,805km)","14,669","Jan 15, 1851",Pottawattamie County44,Henry County,087,Mount Pleasant,"434sqmi(1,124km)","20,387","Dec 7, 1836",Wisconsin Territory45,Howard County,089,Cresco,"473sqmi(1,225km)","9,478","Jan 15, 1851",Chickasaw County46,Humboldt County,091,Dakota City,"434sqmi(1,124km)","9,634","Feb 26, 1857",Webster County47,Ida County,093,Ida Grove,"432sqmi(1,119km)","6,956","Jan 15, 1851",Cherokee County48,Iowa County,095,Marengo,"586sqmi(1,518km)","16,568","Feb 17, 1843",Washington County49,Jackson County,097,Maquoketa,"636sqmi(1,647km)","19,368","Dec 21, 1837",Wisconsin Territory50,Jasper County,099,Newton,"730sqmi(1,891km)","37,764","Jan 13, 1846",Mahaska County51,Jefferson County,101,Fairfield,"435sqmi(1,127km)","15,647","Jan 21, 1839",Native American lands52,Johnson County,103,Iowa City,"614sqmi(1,590km)","154,748","Dec 21, 1837","Des Moines County, Iowa and Wisconsin Territory"53,Jones County,105,Anamosa,"575sqmi(1,489km)","20,805","Dec 21, 1837",Wisconsin Territory54,Keokuk County,107,Sigourney,"579sqmi(1,500km)","9,914","Dec 21, 1837",Washington County55,Kossuth County,109,Algona,"973sqmi(2,520km)","14,529","Jan 15, 1851",Webster County56,Lee County,111,Fort Madison and Keokuk,"517sqmi(1,339km)","33,215","Dec 7, 1836",Des Moines County57,Linn County,113,Cedar Rapids,"718sqmi(1,860km)","228,939","Dec 21, 1837",Wisconsin Territory58,Louisa County,115,Wapello,"402sqmi(1,041km)","10,749","Dec 7, 1836",Des Moines County59,Lucas County,117,Chariton,"431sqmi(1,116km)","8,710","Jan 13, 1846",Monroe County60,Lyon County,119,Rock Rapids,"588sqmi(1,523km)","12,011","Jan 15, 1851","Woodbury County, Iowa"61,Madison County,121,Winterset,"561sqmi(1,453km)","16,773","Jan 13, 1846",Polk County62,Mahaska County,123,Oskaloosa,"571sqmi(1,479km)","21,984","Feb 17, 1843",Fox and Sac Indian lands63,Marion County,125,Knoxville,"554sqmi(1,435km)","33,380","Jun 10, 1845",Washington County64,Marshall County,127,Marshalltown,"572sqmi(1,481km)","39,853","Jan 13, 1846",Jasper County65,Mills County,129,Glenwood,"437sqmi(1,132km)","14,465","Jan 15, 1851",Pottawattamie County66,Mitchell County,131,Osage,"469sqmi(1,215km)","10,555","Jan 15, 1851",Chickasaw County67,Monona County,133,Onawa,"693sqmi(1,795km)","8,574","Jan 15, 1851",Harrison County68,Monroe County,135,Albia,"433sqmi(1,121km)","7,610","Feb 17, 1843",Wapello County69,Montgomery County,137,Red Oak,"424sqmi(1,098km)","10,322","Jan 15, 1851",Polk County70,Muscatine County,139,Muscatine,"439sqmi(1,137km)","42,688","Dec 7, 1836",Des Moines County71,O'Brien County,141,Primghar,"573sqmi(1,484km)","14,015","Jan 15, 1851",Cherokee County72,Osceola County,143,Sibley,"399sqmi(1,033km)","6,159","Jan 15, 1851",Woodbury County73,Page County,145,Clarinda,"535sqmi(1,386km)","15,197","Feb 24, 1847",Pottawattamie County74,Palo Alto County,147,Emmetsburg,"564sqmi(1,461km)","8,906","Jan 15, 1851",Kossuth County75,Plymouth County,149,Le Mars,"864sqmi(2,238km)","25,650","Jan 15, 1851",Woodbury County76,Pocahontas County,151,Pocahontas,"578sqmi(1,497km)","7,074","Jan 15, 1851",Greene County and Humboldt County77,Polk County,153,Des Moines,"570sqmi(1,476km)","496,844","Jan 13, 1846",Native American lands78,Pottawattamie County,155,Council Bluffs,"954sqmi(2,471km)","93,304","Feb 24, 1847",Native American lands79,Poweshiek County,157,Montezuma,"585sqmi(1,515km)","18,586","Feb 17, 1843",Meskwaki lands80,Ringgold County,159,Mount Ayr,"538sqmi(1,393km)","4,639","Feb 24, 1847",Taylor County81,Sac County,161,Sac City,"576sqmi(1,492km)","9,752","Jan 15, 1851",Greene County82,Scott County,163,Davenport,"458sqmi(1,186km)","174,170","Dec 21, 1837",Wisconsin Territory83,Shelby County,165,Harlan,"591sqmi(1,531km)","11,770","Jan 15, 1851",Cass County84,Sioux County,167,Orange City,"768sqmi(1,989km)","35,893","Jan 15, 1851",Plymouth County85,Story County,169,Nevada,"573sqmi(1,484km)","99,472","Jan 13, 1846","Boone County, Jasper County, and Polk County"86,Tama County,171,Toledo,"721sqmi(1,867km)","16,867","Feb 17, 1843",Benton County and Boone County87,Taylor County,173,Bedford,"534sqmi(1,383km)","5,868","Feb 24, 1847",Page County88,Union County,175,Creston,"424sqmi(1,098km)","12,018","Jan 15, 1851",Clarke County89,Van Buren County,177,Keosauqua,"485sqmi(1,256km)","7,243","Dec 7, 1836",Des Moines County90,Wapello County,179,Ottumwa,"432sqmi(1,119km)","35,256","Feb 17, 1843",Native American lands91,Warren County,181,Indianola,"572sqmi(1,481km)","53,402","Jan 13, 1846",Polk County92,Washington County,183,Washington,"569sqmi(1,474km)","22,491","Jan 25, 1839",Wisconsin Territory93,Wayne County,185,Corydon,"526sqmi(1,362km)","6,508","Jan 13, 1846",Appanoose County94,Webster County,187,Fort Dodge,"715sqmi(1,852km)","37,147","Jan 12, 1853",Risley County and Yell County (defunct IA counties)95,Winnebago County,189,Forest City,"400sqmi(1,036km)","10,656","Jan 15, 1851",Kossuth County96,Winneshiek County,191,Decorah,"690sqmi(1,787km)","19,892","Feb 20, 1847",Native American lands97,Woodbury County,193,Sioux City,"873sqmi(2,261km)","105,607","Jan 12, 1853","Wahkaw County (renamed), Polk County"98,Worth County,195,Northwood,"400sqmi(1,036km)","7,385","Jan 15, 1851",Mitchell County99,Wright County,197,Clarion,"581sqmi(1,505km)","12,785","Jan 15, 1851",Webster County and Kossuth County,,,,,,,https://www.downloadexcelfiles.com/,,,,,,,