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Iowa There are 99 Counties in Iowa Click the state map for a larger view or select a county from the list below to view a listing of the county officials and other information pertaining to that county.

Related Links for Iowa Places/Cities in Iowa Population Figures for Iowa PILT Figures for Iowa SCAAP Funding for Iowa Census Bureau Profile State of Iowa Web Site 50states.com Congressional District Maps Iowa State Association of Counties 22501 SW 7th Street, Suite Q Des Moines, IA 50309-4540 Phone: (515)244-7181 Fax: (515)244-6397 Home Page: http://www.iowacounties.org

County	NACo Member	2000 Population	Square Miles	County Seat	Founded
Adair		8,243	569	Greenfield	1851
Adams		4,482	424	Corning	1851
Allamakee		14,675	640	Waukon	1847
Appanoose		13,721	496	Centerville	1843
Audubon		6,830	443	Audubon	1851
Benton		25,308	716	Vinton	1837
Black Hawk		128,012	567	Waterloo	1843
Boone		26,224	572	Boone	1846
Bremer		23,325	438	Waverly	1851
Buchanan		21,093	571	Independence	1837
Buena Vista		20,411	575	Storm Lake	1851
Butler		15,305	580	Allison	1851
Calhoun		11,115	570	Rockwell City	1851
Carroll		21,421	569	Carroll	1851
Cass		14,684	564	Atlantic	1851
Cedar		18,187	580	Tipton	1837
Cerro Gordo		46,447	568	Mason City	1851
Cherokee		13,035	577	Cherokee	1851
Chickasaw		13,095	505	New Hampton	1851
Clarke		9,133	431	Osceola	1846
Clay		17,372	569	Spencer	1851
Clayton		18,678	779	Elkader	1837
Clinton		50,149	695	Clinton	1837
Crawford		16,942	714	Denison	1851
Dallas		40,750	586	Adel	1846
Davis		8,541	503	Bloomfield	1843
Decatur		8,689	532	Leon	1846
Delaware		18,404	578	Manchester	1837
Des Moines		42,351	416	Burlington	1834
Dickinson		16,424	381	Spirit Lake	1851
Dubuque		89,143	608	Dubuque	1834
Emmet		11,027	396	Estherville	1851
Fayette		22,008	731	West Union	1837
Floyd		16,900	501	Charles City	1851
Franklin		10,704	582	Hampton	1851
Fremont		8,010	511	Sidney	1847
Greene		10,366	568	Jefferson	1851
Grundy		12,369	503	Grundy Center	1851
Guthrie		11,353	591	Guthrie Center	1851
Hamilton		16,438	577	Webster City	1856
Hancock		12,100	571	Garner	1851
Hardin		18,812	569	Eldora	1851
Harrison		15,666	697	Logan	1851
Henry		20,336	434	Mount Pleasant	1836
Howard		9,932	473	Cresco	1851
Humboldt		10,381	434	Dakota City	1851
Ida		7,837	432	Ida Grove	1851
Iowa		15,671	586	Marengo	1843
Jackson		20,296	636	Maquoketa	1837
Jasper		37,213	730	Newton	1846
Jefferson		16,181	435	Fairfield	1839
Johnson		111,006	614	Iowa City	1837
Jones		20,221	575	Anamosa	1837
Keokuk		11,400	579	Sigourney	1837
Kossuth		17,163	973	Algona	1851
Lee		38,052	517	Fort Madison and Keokuk	1836
Linn		191,701	718	Cedar Rapids	1837
Louisa		12,183	402	Wapello	1836
Lucas		9,422	431	Chariton	1846
Lyon		11,763	588	Rock Rapids	1851
Madison		14,019	561	Winterset	1844
Mahaska		22,335	571	Oskaloosa	1843
Marion		32,052	554	Knoxville	1845
Marshall		39,311	572	Marshalltown	1846
Mills		14,547	437	Glenwood	1851
Mitchell		10,874	469	Osage	1851
Monona		10,020	693	Onawa	1851
Monroe		8,016	433	Albia	1843
Montgomery		11,771	424	Red Oak	1851
Muscatine		41,722	439	Muscatine	1836
O'Brien		15,102	573	Primghar	1851
Osceola		7,003	399	Sibley	1851
Page		16,976	535	Clarinda	1847
Palo Alto		10,147	564	Emmetsburg	1851
Plymouth		24,849	864	Le Mars	1851
Pocahontas		8,662	578	Pocahontas	1851
Polk		374,601	570	Des Moines	1846
Pottawattamie		87,704	954	Council Bluffs	1848
Poweshiek		18,815	585	Montezuma	1843
Ringgold		5,469	538	Mount Ayr	1855
Sac		11,529	576	Sac City	1851
Scott		158,668	458	Davenport	1837
Shelby		13,173	591	Harlan	1851
Sioux		31,589	768	Orange City	1851
Story		79,981	573	Nevada	1846
Tama		18,103	721	Toledo	1843
Taylor		6,958	534	Bedford	1847
Union		12,309	424	Creston	1851
Van Buren		7,809	485	Keosauqua	1836
Wapello		36,051	432	Ottumwa	1843
Warren		40,671	572	Indianola	1846
Washington		20,670	569	Washington	1837
Wayne		6,730	526	Corydon	1846
Webster		40,235	715	Fort Dodge	1853
Winnebago		11,723	400	Forest City	1847
Winneshiek		21,310	690	Decorah	1847
Woodbury		103,877	873	Sioux City	1851
Worth		7,909	400	Northwood	1851
Wright		14,334	581	Clarion	1851

To report any updates, deletions or additions, contact Database Updates or send a fax to NACo, Attn: Database Updates (202)393-2630.