Iowa County Codes

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These codes were in use from 1922 through the expiration of the 1975 baseplate in 1978.

County Code #: County (County Seat)

00: Non-Resident
1: Adair (Greenfield)
2: Adams (Corning)
3: Allamakee (Waukon)
4: Appanoose (Centerville)
5: Audubon (Audubon)
6: Benton (Vinton)
7: Black Hawk (Waterloo)
8: Boone (Boone)
9: Bremer (Waverly)
10: Buchanan (Independence)
11: Buena Vista (Storm Lake)
12: Butler (Allison)
13: Calhoun (Rockwell City)
14: Carroll (Carroll)
15: Cass (Atlantic)
16: Cedar (Tipton)
17: Cerro Gordo (Mason City)
18: Cherokee (Cherokee)
19: Chickasaw (New Hampton)
20: Clarke (Osceola)
21: Clay (Spencer)
22: Clayton (Elkader)
23: Clinton (Clinton)
24: Crawford (Denison)
25: Dallas (Adel)
26: Davis (Bloomfield)
27: Decatur (Leon)
28: Delaware (Manchester)
29: Des Moines (Burlington)
30: Dickinson (Spirit Lake)
31: Dubuque (Dubuque)
32: Emmet (Estherville)
33: Fayette (West Union)
34: Floyd (Charles City)
35: Franklin (Hampton)
36: Fremont (Sidney)
37: Greene (Jefferson)
38: Grundy (Grundy Center)
39: Guthrie (Guthrie Center)
40: Hamilton (Webster City)
41: Hancock (Garner)
42: Hardin (Eldora)
43: Harrison (Logan)
44: Henry (Mount Pleasant)
45: Howard (Cresco)
46: Humboldt (Dakota City)
47: Ida (Ida Grove)
48: Iowa (Marengo)
49: Jackson (Maquoketa)
50: Jasper (Newton)
51: Jefferson (Fairfield)
52: Johnson (Iowa City)
53: Jones (Anamosa)
54: Keokuk (Sigourney)
55: Kossuth (Algona)
56: Lee (Fort Madison)
57: Linn (Cedar Rapids)
58: Louisa (Wapello)
59: Lucas (Charlton)
60: Lyon (Rock Rapids)
61: Madison (Winterset)
62: Mahaska (Oskaloosa)
63: Marion (Knoxville)
64: Marshall (Marshalltown)
65: Mills (Glenwood)
66: Mitchell (Osage)

67: Monona (Onawa)
68: Monroe (Albia)
69: Montgomery (Red Oak)
70: Muscatine (Muscatine)
71: O'Brien (Primghar)
72: Osceola (Sibley)
73: Page (Clarinda)
74: Palo Alto (Emmetsburg)
75: Plymouth (LeMars)
76: Pocahontas (Pocahontas)
77: Polk (Des Moines)
78: Pottawattamie (Council Bluffs)
79: Poweshiek (Montezuma)
80: Ringgold (Mount Ayr)
81: Sac (Sac City)
82: Scott (Davenport)
83: Shelby (Harlan)
84: Sioux (Orange City)
85: Story (Nevada)
86: Tama (Toldeo)
87: Taylor (Bedford)
88: Union (Creston)
89: Van Buren (Keosauqua)
90: Wappelo (Ottumwa)
91: Warren (Indianola)
92: Washington (Washington)
93: Wayne (Corydon)
94: Webster (Fort Dodge)
95: Winnebago (Forest City)
96: Winneshiek (Decorah)
97: Woodbury (Sioux City)
98: Worth (Northwood)
99: Wright (Clarion)

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© Copyright 1998-2017 David Nicholson. All Rights Reserved.

Last Modified 2/8/1999.