Liste over amter i Iowa

Amt

FIPS-kode

Amtssæde

#

Etableret

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Område

Kort

Adair County

001

Greenfield

69

15. januar, 1851

Cass County

John Adair (1757-1840), sjette guvernør i Kentucky

7003768200000000000♠7,682

70025690000000000000000♠569 km2
(70031474000000000000000♠1,474 km²)

Adams County

003

Corning

81

15. januar, 1851

Taylor County

John Adams, USA's anden præsident (1797-1801)

7003402900000000000♠4,029

7002424240000000000000000♠424 km2
(700310980000000000000000000♠1,098 km²)

Allamakee County

005

Waukon

11

20. februar, 1847

Clayton County

Omstridt, muligvis opkaldt efter Allan Makee, en tidlig indianerhandler og guide for de første nybyggere

7004143300000000000♠14,330

70026400000000000000000♠640 km2
(70031658000000000000000♠1,658 km²)

Appanoose County

007

Centerville

96

17. februar, 1843

Davis County

Appanoose, indianerhøvding, der ledede fredspartiet i Black Hawk-krigen

7004128840000000000♠12,884

70024960000000000000000♠496 km2
(7003128500000000000♠1.285 km²)

Audubon County

009

Audubon

57

15. januar, 1851

Black Hawk County og Cass County

John James Audubon (1785-1851), ornitolog og kunstner

7003611900000000000♠6,119

70024430000000000000000♠443 km2
(70031147000000000000000♠1,147 km²)

Benton County

011

Vinton

51

21. december, 1837

Amerikanske indianeres landområder og Wisconsin Territory

Thomas Hart Benton, amerikansk senator (1821-1851)

7004260760000000000♠26,076

70027160000000000000000♠716 km2
(70031854000000000000000♠1,854 km²)

Black Hawk County

013

Waterloo

39

17. februar, 1843

Delaware County

Black Hawk (1767-1838), høvding for Fox and Sac-indianerne og leder af Black Hawk-krigen

7005131090000000000♠131,090

70025670000000000000000♠567 km2
(700314690000000000000000000♠1,469 km²)

Boone County

015

Boone

47

13. januar, 1846

Polk County

Nathan Boone (1781-1863), en af de første til at kortlægge Iowa

7004263060000000000♠26,306

70025720000000000000000♠572 km2
(70031481000000000000000♠1,481 km²)

Bremer County

017

Waverly

30

15. januar, 1851

Amerikanske indianeres landområder og Winnebago County

Fredrika Bremer (1801-1865), svensk digter og forfatter

7004242760000000000♠24,276

7002428280000000000000000♠428 km2
(700311090000000000000000000♠1,109 km²)

Buchanan County

019

Uafhængighed

40

21. december, 1837

Delaware County og Wisconsin Territory

James Buchanan, USA's femtende præsident (1857-1861)

7004209580000000000♠20,958

70025710000000000000000♠571 km2
(70031479000000000000000♠1,479 km²)

Buena Vista County

021

Storm Lake

24

15. januar, 1851

Clay County og Sac County

Slaget ved Buena Vista, et slag under den mexicansk-amerikanske krig

7004202600000000000♠20,260

70025750000000000000000♠575 km2
(70031489000000000000000♠1,489 km²)

Butler County

023

Allison

29

15. januar, 1851

Black Hawk County og Buchanan County

William Orlando Butler (1791-1880), helt fra krigen i 1812 og forgæves kandidat til vicepræsidentposten

7004148670000000000♠14,867

70025800000000000000000♠580 km2
(70031502000000000000000♠1,502 km²)

Calhoun County

025

Rockwell City

34

15. januar, 1851

Fox County (omdøbt)

John Caldwell Calhoun, USA's vicepræsident (1825-1832)

7003967000000000000♠9,670

70025700000000000000000♠570 km2
(70031476000000000000000♠1,476 km²)

Carroll County

027

Carroll

45

15. januar, 1851

Guthrie County

Charles Carroll (1737-1832), den længstlevende underskriver af uafhængighedserklæringen

7004208160000000000♠20,816

70025690000000000000000♠569 km2
(70031474000000000000000♠1,474 km²)

Cass County

029

Atlanterhavet

68

15. januar, 1851

Pottawattamie County

Lewis Cass, amerikansk senator fra Michigan og forgæves kandidat til præsidentvalget (1848)

7004139560000000000♠13,956

70025640000000000000000♠564 km2
(70031461000000000000000♠1,461 km²)

Cedar County

031

Tipton

65

21. december, 1837

Wisconsin-territoriet

Red Cedar River, flod, der løber gennem amtet

7004184990000000000♠18,499

70025800000000000000000♠580 km2
(70031502000000000000000♠1,502 km²)

Cerro Gordo County

033

Mason City

17

15. januar, 1851

Floyd County

Slaget ved Cerro Gordo, slag under den mexicansk-amerikanske krig

7004441510000000000♠44,151

70025680000000000000000♠568 km2
(70031471000000000000000♠1,471 km²)

Cherokee County

035

Cherokee

23

15. januar, 1851

Crawford County

Den amerikanske indianerstamme Cherokee

7004120720000000000♠12,072

70025770000000000000000♠577 km2
(70031494000000000000000♠1,494 km²)

Chickasaw County

037

Ny Hampton

19

15. januar, 1851

Fayette County

Den amerikanske indianerstamme Chickasaw

7004124390000000000♠12,439

70025050000000000000000♠505 km2
(70031308000000000000000♠1,308 km²)

Clarke County

039

Osceola

83

13. januar, 1846

Lucas County

James Clarke, tredje guvernør i Iowa Territory (1845-1846)

7003928600000000000♠9,286

70024310000000000000000♠431 km2
(70031116000000000000000♠1,116 km²)

Clay County

041

Spencer

14

15. januar, 1851

Amerikanske indianeres landområder

Henry Clay, Jr. (1807-1847), officer i den mexicansk-amerikanske krig

7004166670000000000♠16,667

70025690000000000000000♠569 km2
(70031474000000000000000♠1,474 km²)

Clayton County

043

Elkader

21

21. december, 1837

Dubuque County og Wisconsin Territory

John M. Clayton (1796-1856), amerikansk senator fra Delaware

7004181290000000000♠18,129

70027790000000000000000♠779 sq mi
(700320180000000000000000000♠2,018 km²)

Clinton County

045

Clinton

66

21. december, 1837

Dubuque County og Wisconsin Territory

DeWitt Clinton (1769-1828), guvernør i New York

7004491160000000000♠49,116

70026950000000000000000♠695 km2
(700318000000000000000000000♠1.800 km²)

Crawford County

047

Denison

44

15. januar, 1851

Shelby County

William Harris Crawford (1772-1834), amerikansk senator fra Georgia

7004170960000000000♠17,096

70027140000000000000000♠714 km2
(700318490000000000000000000♠1,849 km²)

Dallas County

049

Adel

59

13. januar, 1846

Polk County

George Mifflin Dallas (1792-1864), USA's ellevte vicepræsident

7004661350000000000♠66,135

70025860000000000000000♠586 km2
(700315180000000000000000000♠1,518 km²)

Davis County

051

Bloomfield

97

17. februar, 1843

Van Buren County

Garrett Davis (1801-1872), kongresmedlem

7003875300000000000♠8,753

70025030000000000000000♠503 km2
(700313030000000000000000000♠1,303 km²)

Decatur County

053

Leon

94

13. januar, 1846

Appanoose County

Stephen Decatur (1779-1820), flådeofficer i krigen 1812

7003845700000000000♠8,457

70025320000000000000000♠532 km2
(700313780000000000000000000♠1,378 km²)

Delaware County

055

Manchester

41

21. december, 1837

Dubuque County og Wisconsin Territory

Delstaten Delaware, hjemsted for Iowas fortaler for statsdannelse Senator John M. Clayton fra USA

7004177640000000000♠17,764

70025780000000000000000♠578 km2
(70031497000000000000000♠1,497 km²)

Des Moines County

057

Burlington

89

6. september, 1834

Michigan-territoriet og Wisconsin-territoriet

Des Moines River, flod, der engang løb gennem amtet

7004403250000000000♠40,325

7002416000000000000000♠416 km2
(700310770000000000000000000♠1,077 km²)

Dickinson County

059

Spirit Lake

3

15. januar, 1851

Kossuth County

Daniel Stevens Dickinson (1800-1866), amerikansk senator fra New York

7004166670000000000♠16,667

70023810010000000000000000♠381 km2
(700298700000000000000000000♠987 km²)

Dubuque County

061

Dubuque

42

6. september, 1834

Michigan-territoriet og Wisconsin-territoriet

Julien Dubuque (1762-1810), den første hvide bosætter i Iowa

7004936530000000000♠93,653

70026080000000000000000♠608 km2
(700315750000000000000000000♠1,575 km²)

Emmet County

063

Estherville

4

15. januar, 1851

Dickinson County og Kossuth County

Robert Emmet (1778-1803), irsk revolutionær og amerikansk republikansk sympatisør

7004103020000000000♠10,302

70023960000000000000000♠396 km2
(70031026000000000000000♠1,026 km²)

Fayette County

065

Vestunionen

20

21. december, 1837

Clayton County og Wisconsin Territory

Marquis de Lafayette (1757-1834), franskmand, der hjalp koloniale styrker under den amerikanske revolutionskrig

7004208800000000000♠20,880

70027310000000000000000♠731 km2
(700318930000000000000000000♠1,893 km²)

Floyd County

067

Charles City

18

15. januar, 1851

Chickasaw County

Charles Floyd (1782-1804), medlem af Lewis og Clark-ekspeditionen, der døde i Iowa

7004163030000000000♠16,303

70025010000000000000000♠501 km2
(700312980000000000000000000♠1,298 km²)

Franklin County

069

Hampton

28

15. januar, 1851

Chickasaw County

Benjamin Franklin (1706-1790), statsmand og USA's grundlægger

7004106800000000000♠10,680

70025820000000000000000♠582 km2
(70031507000000000000000♠1,507 km²)

Fremont County

071

Sidney

90

24. februar, 1847

Pottawattamie County

John Charles Fremont (1813-1890), officer i den mexicansk-amerikanske krig

7003744100000000000♠7,441

70025110000000000000000♠511 km2
(700313230000000000000000000♠1,323 km²)

Greene County

073

Jefferson

46

15. januar, 1851

Dallas County

Nathanael Greene (1742-1786), general fra den amerikanske revolutionskrig

7003933600000000000♠9,336

70025680000000000000000♠568 km2
(70031471000000000000000♠1,471 km²)

Grundy County

075

Grundy Center

38

15. januar, 1851

Black Hawk County

Felix Grundy (1777-1840), amerikansk senator

7004124530000000000♠12,453

70025030000000000000000♠503 km2
(700313030000000000000000000♠1,303 km²)

Guthrie County

077

Guthrie Center

58

8. juli 1851

Jackson County

Edwin B. Guthrie, officer i den mexicansk-amerikanske krig

7004109540000000000♠10,954

70025910000000000000000♠591 km2
(70031531000000000000000♠1,531 km²)

Hamilton County

079

Webster City

36

22. december 1856

Webster County

William W. Hamilton, formand for senatet i Iowa (1856-1857)

7004156730000000000♠15,673

70025770000000000000000♠577 km2
(70031494000000000000000♠1,494 km²)

Hancock County

081

Garner

16

15. januar, 1851

Wright County

John Hancock (1737-1793), formand for den første kontinentalkongres

7004113410000000000♠11,341

70025710000000000000000♠571 km2
(70031479000000000000000♠1,479 km²)

Hardin County

083

Eldora

37

15. januar, 1851

Black Hawk County

John J. Hardin (1810-1847), fremtrædende soldat i Black Hawk-krigen

17004175340000000000♠7,534

70025690000000000000000♠569 km2
(70031474000000000000000♠1,474 km²)

Harrison County

085

Logan

55

15. januar, 1851

Pottawattamie County

William Henry Harrison (1773-1841), USA's niende præsident

7004149280000000000♠14,928

70026970000000000000000♠697 km2
(700318050000000000000000000♠1,805 km²)

Henry County

087

Mount Pleasant

88

7. december, 1836

Wisconsin-territoriet

Omstridt; enten Henry Dodge (1782-1867), guvernør i Wisconsin Territory; eller James Dougherty Henry, general i Black Hawk-krigen

7004201450000000000♠20,145

70024340000000000000000♠434 km2
(700311240000000000000000000♠1,124 km²)

Howard County

089

Cresco

9

15. januar, 1851

Chickasaw County

Tilghman Ashurst Howard (1797-1844), kongresmedlem

7003956600000000000♠9,566

70024730000000000000000♠473 km2
(700312250000000000000000000♠1,225 km²)

Humboldt County

091

Dakota City

26

26. februar, 1857

Webster County

Alexander von Humboldt (1769-1859), tysk videnskabsmand

7003981500000000000♠9,815

70024340000000000000000♠434 km2
(700311240000000000000000000♠1,124 km²)

Ida County

093

Ida Grove

32

15. januar, 1851

Cherokee County

Mount Ida i Grækenland

7003708900000000000♠7,089

70024320000000000000000♠432 km2
(700311190000000000000000000♠1,119 km²)

Iowa County

095

Marengo

63

17. februar, 1843

Washington County

Iowa River, flod, der løber gennem amtet, og som i sig selv er opkaldt efter den amerikanske indianerstamme Ioway

7004163550000000000♠16,355

70025860000000000000000♠586 km2
(700315180000000000000000000♠1,518 km²)

Jackson County

097

Maquoketa

54

21. december, 1837

Wisconsin-territoriet

Andrew Jackson (1767-1845), USA's syvende præsident

7004198480000000000♠19,848

70026360000000000000000♠636 km2
(70031647000000000000000♠1,647 km²)

Jasper County

099

Newton

61

13. januar, 1846

Mahaska County

William Jasper (1750-1779), sergent i den amerikanske revolutionskrig

7004368420000000000♠36,842

70027300000000000000000♠730 km2
(70031891000000000000000♠1,891 km²)

Jefferson County

101

Fairfield

87

21. januar, 1839

Amerikanske indianeres landområder

Thomas Jefferson (1743-1826), USA's tredje præsident

7004168430000000000♠16,843

70024350000000000000000♠435 km2
(70031127000000000000000♠1,127 km²)

Johnson County

103

Iowa City

64

21. december, 1837

Des Moines County, Iowa og Wisconsin Territory

Richard Mentor Johnson (1780-1850), USA's vicepræsident 1837-1841

7005130882000000000♠130,882

70026140000000000000000♠614 km2
(700315900000000000000000000♠1.590 km²)

Jones County

105

Anamosa

53

21. december, 1837

Wisconsin-territoriet

George Wallace Jones (1804-1896), amerikansk senator fra Iowa

7004206380000000000♠20,638

70025750000000000000000♠575 km2
(70031489000000000000000♠1,489 km²)

Keokuk County

107

Sigourney

74

21. december, 1837

Washington County

Keokuk (1767-1848), høvding for den amerikanske indianerstamme Sac

7004105110000000000♠10,511

70025790000000000000000♠579 km2
(70031500000000000000000♠1.500 km²)

Kossuth County

109

Algona

5

15. januar, 1851

Webster County

Lajos Kossuth (1802-1894), ungarsk revolutionær, der var inspireret af de amerikanske demokratiske idealer

7004155430000000000♠15,543

70029730000000000000000♠973 km2
(70032520000000000000000♠2,520 km²)

Lee County

111

Fort Madison og Keokuk

99

7. december, 1836

Des Moines County

William Elliott Lee, forretningsmand fra New York Land Company, som solgte amtets første jordstykker

7004358620000000000♠35,862

70025170000000000000000♠517 km2
(700313390000000000000000000♠1,339 km²)

Linn County

113

Cedar Rapids

52

21. december, 1837

Wisconsin-territoriet

Lewis Fields Linn (1795-1843), læge og amerikansk senator fra Missouri

7005211226000000000♠211,226

70027180000000000000000♠718 km2
(700318600000000000000000000♠1,860 km²)

Louisa County

115

Wapello

76

7. december, 1836

Des Moines County

Omstridt; enten Louisa Massey, en kvinde, der dengang var berømt for at hævne sin brors død, eller Louisa County, Virginia

7004113870000000000♠11,387

70024020000000000000000♠402 km2
(70031041000000000000000♠1,041 km²)

Lucas County

117

Chariton

84

13. januar, 1846

Monroe County

Robert Lucas (1781-1853), første guvernør i Iowa Territory

7003889800000000000♠8,898

70024310000000000000000♠431 km2
(70031116000000000000000♠1,116 km²)

Lyon County

119

Rock Rapids

1

15. januar, 1851

Woodbury County, Iowa

Nathaniel Lyon (1818-1861), den første general fra Unionen, der blev dræbt i den amerikanske borgerkrig, (tidligere Buncombe County)

7004115810000000000♠11,581

70025880000000000000000♠588 km2
(700315230000000000000000000♠1,523 km²)

Madison County

121

Winterset

70

13. januar, 1846

Polk County

James Madison (1751-1836), USA's fjerde præsident

7004156790000000000♠15,679

70025610000000000000000♠561 km2
(70031453000000000000000♠1,453 km²)

Mahaska County

123

Oskaloosa

73

17. februar, 1843

Fox and Sac-indianernes landområder

Mahaska (1784-1834), høvding for Ioway-stammen af indianere

7004223810000000000♠22,381

70025710000000000000000♠571 km2
(70031479000000000000000♠1,479 km²)

Marion County

125

Knoxville

72

10. juni, 1845

Washington County

Francis Marion (1732-1795), general i den amerikanske revolutionskrig

7004333090000000000♠33,309

70025540000000000000000♠554 km2
(700314350000000000000000000♠1,435 km²)

Marshall County

127

Marshalltown

49

13. januar, 1846

Jasper County

John Marshall (1755-1835), fjerde øverste dommer ved USA's højesteret

7004406480000000000♠40,648

70025720000000000000000♠572 km2
(7003148100000000000♠1,481 km²)

Mills County

129

Glenwood

79

15. januar, 1851

Pottawattamie County

Frederick Mills, major, dræbt under slaget ved Churubusco i den mexicansk-amerikanske krig

7004150590000000000♠15,059

7002437000000000000♠437 km2
(700311320000000000000000000♠1,132 km²)

Mitchell County

131

Osage

8

15. januar, 1851

Chickasaw County

John Mitchel (1815-1875), irsk revolutionær, der i en periode opererede fra USA

7004107760000000000♠10,776

70024690000000000000000♠469 km2
(700312150000000000000000000♠1,215 km²)

Monona County

133

Onawa

43

15. januar, 1851

Harrison County

Ord af indiansk oprindelse, der måske kan oversættes til "fredelig dal"

7003924300000000000♠9,243

70026930000000000000000♠693 km2
(70031795000000000000000♠1,795 km²)

Monroe County

135

Albia

85

17. februar, 1843

Wapello County

James Monroe (1758-1831), USA's femte præsident

7003797000000000000♠7,970

70024330000000000000000♠433 km2
(700311210000000000000000000♠1,121 km²)

Montgomery County

137

Rød eg

80

15. januar, 1851

Polk County

Richard Montgomery (1738-1775), general i den amerikanske revolutionskrig

7004107400000000000♠10,740

7002424240000000000000000♠424 km2
(700310980000000000000000000♠1,098 km²)

Muscatine County

139

Muscatine

77

7. december, 1836

Des Moines County

Muscatine indianerstamme

7004427450000000000♠42,745

70024390000000000000000♠439 km2
(70031137000000000000000♠1,137 km²)

O'Brien County

141

Primghar

13

15. januar, 1851

Cherokee County

William Smith O'Brien (1803-1864), irsk revolutionær, der var inspireret af de amerikanske demokratiske idealer

7004143980000000000♠14,398

70025730000000000000000♠573 km2
(70031484000000000000000♠1,484 km²)

Osceola County

143

Sibley

2

15. januar, 1851

Woodbury County

Osceola (1804-1838), indiansk leder

7003646200000000000♠6,462

70023990000000000000000♠399 km2
(700310330000000000000000000♠1,033 km²)

Side County

145

Clarinda

91

24. februar, 1847

Pottawattamie County

John Page, officer dræbt i slaget ved Palo Alto i den mexicansk-amerikanske krig

7004159320000000000♠15,932

7002535350000000000000000♠535 km2
(700313860000000000000000000♠1,386 km²)

Palo Alto County

147

Emmetsburg

15

15. januar, 1851

Kossuth County

Slaget ved Palo Alto i den mexicansk-amerikanske krig

7003942100000000000♠9,421

70025640000000000000000♠564 km2
(70031461000000000000000♠1,461 km²)

Plymouth County

149

Le Mars

22

15. januar, 1851

Woodbury County

Landingssted for de pilgrimme, der kom til Amerika med Mayflower

7004249860000000000♠24,986

70028640000000000000000♠864 km2
(700322380000000000000000000♠2,238 km²)

Pocahontas County

151

Pocahontas

25

15. januar, 1851

Greene County og Humboldt County

Pocahantas (1595-1618), berømt indiansk kvinde

7003731000000000000♠7,310

70025780000000000000000♠578 km2
(70031497000000000000000♠1,497 km²)

Polk County

153

Des Moines

60

13. januar, 1846

Amerikanske indianeres landområder

James K. Polk (1795-1849), USA's ellevte præsident

7005430640000000000♠430,640

70025700000000000000000♠570 km2
(70031476000000000000000♠1,476 km²)

Pottawattamie County

155

Council Bluffs

67

24. februar, 1847

Amerikanske indianeres landområder

Pottawattamie indianerstamme

7004931580000000000♠93,158

70029540000000000000000♠954 km2
(70032471000000000000000♠2,471 km²)

Poweshiek County

157

Montezuma

62

17. februar, 1843

Mesquakie indianske områder

Poweshiek, høvding for ræve-stammen

7004189140000000000♠18,914

70025850000000000000000♠585 km2
(700315150000000000000000000♠1,515 km²)

Ringgold County

159

Mount Ayr

93

24. februar, 1847

Taylor County

Samuel Ringgold (1796-1846), major, dræbt i den mexicansk-amerikanske krig

7003513100000000000♠5,131

70025380000000000000000♠538 km2
(700313930000000000000000000♠1,393 km²)

Sac County

161

Sac City

33

15. januar, 1851

Greene County

Sac indianerstamme

7004103500000000000♠10,350

70025760000000000000000♠576 km2
(70031492002000000000000000♠1,492 km²)

Scott County

163

Davenport

78

21. december, 1837

Wisconsin-territoriet

Winfield Scott (1786-1866), general i den amerikanske hær under krigen i 1812

7005165224000000000♠165,224

70024580000000000000000♠458 km2
(70031186000000000000000♠1,186 km²)

Shelby County

165

Harlan

56

15. januar, 1851

Cass County

Isaac Shelby (1750-1826), general i den amerikanske revolutionskrig og krigen i 1812

7004121670000000000♠12,167

70025910000000000000000♠591 km2
(70031531000000000000000♠1,531 km²)

Sioux County

167

Orange City

12

15. januar, 1851

Plymouth County

Sioux indianerstamme

7004337040000000000♠33,704

70027680000000000000000♠768 km2
(70031989000000000000000♠1,989 km²)

Story County

169

Nevada

48

13. januar, 1846

Boone County, Jasper County og Polk County

Joseph Story (1779-1845), dommer ved USA's højesteret

7004895420000000000♠89,542

70025730000000000000000♠573 km2
(70031484000000000000000♠1,484 km²)

Tama County

171

Toledo

50

17. februar, 1843

Benton County og Boone County

Omstridt; enten Taimah, rævehøvding, eller Taomah, Poweshiek's hustru

7004177670000000000♠17,767

70027210000000000000000♠721 km2
(700318670000000000000000000♠1,867 km²)

Taylor County

173

Bedford

92

24. februar, 1847

Side County

Zachary Taylor (1784-1850), USA's tolvte præsident

7003631700000000000♠6,317

70025340000000000000000♠534 km2
(700313830000000000000000000♠1,383 km²)

Union County

175

Creston

82

15. januar, 1851

Clarke County

Staternes union

7004125340000000000♠12,534

7002424240000000000000000♠424 km2
(700310980000000000000000000♠1,098 km²)

Van Buren County

177

Keosauqua

98

7. december, 1836

Des Moines County

Martin Van Buren (1782-1862), USA's ottende præsident

7003757000000000000♠7,570

70024850000000000000000♠485 km2
(70031256000000000000000♠1,256 km²)

Wapello County

179

Ottumwa

86

17. februar, 1843

Amerikanske indianeres landområder

Wapello, høvding for den amerikanske stamme Fox Native American

7004356250000000000♠35,625

70024320000000000000000♠432 km2
(700311190000000000000000000♠1,119 km²)

Warren County

181

Indianola

71

13. januar, 1846

Polk County

Joseph Warren (1741-1775), general i den amerikanske revolutionskrig

7004462250000000000♠46,225

70025720000000000000000♠572 km2
(70031481000000000000000♠1,481 km²)

Washington County

183

Washington

75

25. januar, 1839

Wisconsin-territoriet

George Washington (1732-1799), USA's første præsident

7004217040000000000♠21,704

70025690000000000000000♠569 km2
(70031474000000000000000♠1,474 km²)

Wayne County

185

Corydon

95

13. januar, 1846

Appanoose County

Anthony Wayne (1745-1796), general i den amerikanske revolutionskrig

7003640300000000000♠6,403

7002526260000000000000000♠526 km2
(70031362000000000000000♠1,362 km²)

Webster County

187

Fort Dodge

35

12. januar, 1853

Risley County og Yell County (nedlagte amter)

Daniel Webster (1782-1852), amerikansk senator fra Massachusetts

7004380130000000000♠38,013

70027150000000000000000♠715 km2
(70031852000000000000000♠1,852 km²)

Winnebago County

189

Forest City

6

15. januar, 1851

Kossuth County

Den amerikanske indianerstamme Winnebago

7004108660000000000♠10,866

700240000000000000000000000♠400 km2
(700310360000000000000000000♠1,036 km²)

Winneshiek County

191

Decorah

10

20. februar, 1847

Amerikanske indianeres landområder

Winneshiek, høvding for den amerikanske indianerstamme Winnebago

7004210560000000000♠21,056

70026900000000000000000♠690 km2
(70031787000000000000000♠1,787 km²)

Woodbury County

193

Sioux City

31

12. januar, 1853

Polk County

Levi Woodbury (1789-1851), guvernør i New Hampshire, (tidligere kaldet Wahkaw County)

7005102172000000000♠102,172

70028730000000000000000♠873 km2
(70032261000000000000000♠2,261 km²)

Worth County

195

Northwood

7

15. januar, 1851

Mitchell County

William Jenkins Worth (1794-1849), officer i Black Hawk-krigen og den mexicansk-amerikanske krig

7003759800000000000♠7,598

700240000000000000000000000♠400 km2
(700310360000000000000000000♠1,036 km²)

Wright County

197

Clarion

27

15. januar, 1851

Webster County og Kossuth County

Silas Wright (1795-1847), guvernør i New York, og Joseph Albert Wright (1810-1867), guvernør i Indiana, brødre

7004132290000000000♠13,229

70025810000000000000000♠581 km2
(70031505000000000000000♠1,505 km²)