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|
 Iowa
COUNTY CODES
Map
Courtesy of Digital-Topo-Maps.com
Map
courtesy of Iowa.com
County code numbers were assigned in alphabetical order in 1922
except that the 5 most populous counties were given "1" through "5".
Polk was "1", Woodbury was "2", Scott was "3" and Linn was "4" but in
1925 these two flipflopped; Pottawattamie was "5"
Many changes occurred between 1925 and 1930 because of the belief
that serial should not exceed 6 characters; 1 prefix number and up to
10,000; in 1927, 11 prefix letters were issued (A, B, C, E, F, H, J, K,
L, M, N) and in 1929 P and R were added; these shifts were needed as
more and more counties reached or exceeded 10,000 registration number
|
A = POLK |
B = WOODBURY |
C = LINN |
E = SCOTT |
F = POTTAWATAMIE |
|
H = BLACK HAWK |
J = DUBUQUE |
K = CLINTON |
L = WEBSTER |
M = CERRO GORDO |
|
N = DES MOINES |
P = JASPER |
R = LEE |
|
|
1920 specific blocks of numbers were issued in alphabetical order
according to the county names
* counties which had a second issue - see end of table
|
ADAIR |
1-2800 |
ADAMS |
2801-5200 |
ALLAMAKEE |
5201-7800 |
|
|
APPANOOSE |
7801-10500 |
AUDUBON |
10501-13400 |
BENTON* |
13401-17100 |
|
|
BLACK HAWK |
17101-23600 |
BOONE |
23601-27300 |
BREMER |
27301-30800 |
|
|
BUCHANAN |
30801-34300 |
BUENA VISTA |
34301-38500 |
BUTLER |
38501-42000 |
|
|
CALHOUN |
42001-45900 |
CARROLL |
45901-50500 |
CASS |
50501-55200 |
|
|
CEDAR |
55201-58700 |
CERRO GORDO |
58701-62700 |
CHEROKEE |
62701-66400 |
|
|
CHICKASAW |
66401-69000 |
CLARKE |
69001-72700 |
CLAY |
72701-75800 |
|
|
CLAYTON |
75801-79400 |
CLINTON |
79401-84000 |
CRAWFORD |
84001-88200 |
|
|
DALLAS |
88201-93400 |
DAVIS |
93401-95300 |
DECATUR |
95301-98000 |
|
|
DELAWARE* |
98001-100700 |
DES MOINES* |
100701-104100 |
DICKINSON |
104101-106500 |
|
|
DUBUQUE |
106501-111300 |
EMMET |
111301-113900 |
FAYETTE |
113901-117900 |
|
|
FLOYD |
117901-120800 |
FRANKLIN |
120801-123400 |
FREMONT |
123401-125900 |
|
|
GREENE |
125901-129700 |
GRUNDY |
129701-132600 |
GUTHRIE |
132601-135600 |
|
|
HAMILTON |
136601-140400 |
HANCOCK |
140401-143300 |
HARDIN |
143301-148500 |
|
|
HARRISON |
148501-152300 |
HENRY |
152301-155200 |
HOWARD |
155501-157700 |
|
|
HUMBOLDT |
157701-160500 |
IDA |
160501-163400 |
IOWA |
163401-166600 |
|
|
JACKSON |
166601-169700 |
JASPER* |
169701-174100 |
JEFFERSON |
174101-176400 |
|
|
JOHNSON* |
176401-180000 |
JONES |
180001-182900 |
KEOKUK |
182901-186900 |
|
|
KOSSUTH |
186901-191300 |
LEE* |
191301-194400 |
LINN |
194401-201700 |
|
|
LOUISA |
201701-203900 |
LUCAS |
293901-206200 |
LYON |
206201-209300 |
|
|
MADISON |
209301-212100 |
MAHASKA* |
212101-215200 |
MARION |
215201-219000 |
|
|
MARSHALL |
219001-223800 |
MILLS |
223801-226400 |
MITCHELL |
226401-229400 |
|
|
MONONA |
229401-232400 |
MONROE |
232401-234500 |
MONTGOMERY |
234501-237900 |
|
|
MUSCATINE |
237901-242200 |
O'BRIEN |
242201-246600 |
OSCEOLA |
246601-248700 |
|
|
PAGE |
248701-252700 |
PALO ALTO |
252701-255800 |
PLYMOUTH |
255801-260700 |
|
|
POCAHONTAS |
260701-264400 |
POLK |
253401-278200 |
POTTAWATTAMIE |
278201-284900 |
|
|
POWESHIEK |
284901-288600 |
RINGGOLD |
288601-290900 |
SAC |
290901-294800 |
|
|
SCOTT* |
294801-302300 |
SHELBY |
302301-305900 |
SIOUX |
305901-310700 |
|
|
STORY |
310701-315600 |
TAMA |
315601-319800 |
TAYLOR |
319801-322600 |
|
|
UNION |
322601-325600 |
VAN BUREN |
325601-328000 |
WAPELLO |
328001-331200 |
|
|
WARREN |
331201-334600 |
WASHINGTON |
334601-338800 |
WAYNE |
338801-341400 |
|
|
WEBSTER |
341401-346500 |
WINNEBAGO |
346501-349100 |
WINNESHIEK |
349101-352000 |
|
|
WOODBURY |
352001-360200 |
WORTH |
360201-362300 |
WRIGHT |
362301-365800 |
|
|
LEE |
365801-366300 |
MAHASKA |
366301-367100 |
JOHNSON |
367101-367600 |
|
|
DES MOINES |
368101-368600 |
DELAWARE |
368601-369000 |
JASPER |
369001-369400 |
|
|
BENTON |
369401-369900 |
SCOTT |
369901-370400 |
NON-RESIDENT |
367601-368100 |
|
|
|
|
|
|
|
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|
COUNTY |
1922 |
1923-24 |
1925 |
1926 |
1927 |
1928-29 |
1930-78 |
1975-85 |
1986-96 |
|
ADAIR |
6 |
7 |
8 |
10 |
1 |
1 |
1 |
AAA-AAZ |
LAA-LBZ |
|
ADAMS |
7 |
8 |
9 |
11 |
2 |
2 |
2 |
ABA-ABZ |
LCA-LCZ |
|
ALLAMAKEE |
8 |
9 |
10 |
12 |
3 |
3 |
3 |
ACA-ACZ |
LDA-LDZ |
|
APPANOOSE |
9 |
10 |
11 |
13 |
4 |
4 |
4 |
ADA-ADZ |
LEA-LEZ |
|
AUDUBON |
10 |
11 |
12 |
14 |
5 |
5 |
5 |
AEA-AEZ |
LFA-LFZ |
|
BENTON |
11 |
12 |
13 |
15 |
6 |
6 |
6 |
AFA-AGZ |
LGA-LHZ |
|
BLACK HAWK |
12 |
6 |
6 |
6 |
H |
H |
7 |
AHA-AMZ |
LIA-LPZ |
|
BOONE |
13 |
13 |
14 |
16 |
7 |
7 |
8 |
ANA-AOZ |
LQA-LRZ |
|
BREMER |
14 |
14 |
15 |
17 |
8 |
8 |
9 |
APB-AQZ |
LSA-LTZ |
|
BUCHANAN |
15 |
15 |
16 |
18 |
9 |
9 |
10 |
ARA-ARZ |
LUA-LUZ |
|
BUENA VISTA |
16 |
16 |
17 |
19 |
10 |
10 |
11 |
ASA-ATZ |
LVA-LWZ |
|
BUTLER |
17 |
17 |
18 |
20 |
11 |
11 |
12 |
AUA-AUZ |
LXA-LXZ |
|
CALHOUN |
18 |
18 |
19 |
21 |
12 |
12 |
13 |
AVA-AVZ |
LYA-LYZ |
|
CARROLL |
19 |
19 |
20 |
22 |
13 |
13 |
14 |
AWA-AXZ |
LZA-MAZ |
|
CASS |
20 |
20 |
21 |
23 |
14 |
14 |
15 |
AYA-AYZ |
MBA-MBZ |
|
CEDAR |
21 |
21 |
22 |
24 |
15 |
15 |
16 |
AZA-AZZ |
MCA-MCZ |
|
CERRO GORDO |
22 |
22 |
23 |
25 |
M |
M |
17 |
BAA-BCZ |
MDA-MFZ |
|
CHEROKEE |
23 |
23 |
24 |
26 |
16 |
16 |
18 |
BDA-BDZ |
MGA-MGZ |
|
CHICKASAW |
24 |
24 |
25 |
27 |
17 |
17 |
19 |
BEA-BEZ |
MHA-MHZ |
|
CLARKE |
25 |
25 |
26 |
28 |
18 |
18 |
20 |
BFA-BFZ |
MIA-MIZ |
|
CLAY |
26 |
26 |
27 |
29 |
19 |
19 |
21 |
BGA-BGZ |
MJA-MJZ |
|
CLAYTON |
27 |
27 |
28 |
30 |
20 |
20 |
22 |
BHA-BIZ |
MKA-MLZ |
|
CLINTON |
28 |
28 |
29 |
8 |
K |
K |
23 |
BJA-BLZ |
MMA-MOZ |
|
CRAWFORD |
29 |
29 |
30 |
31 |
21 |
21 |
24 |
BMA-BMZ |
MPA-MPZ |
|
DALLAS |
30 |
30 |
31 |
32 |
22 |
22 |
25 |
BNA-BOZ |
MQA-MRZ |
|
DAVIS |
31 |
31 |
32 |
33 |
23 |
23 |
26 |
BPA-BPZ |
MSA-MSZ |
|
DECATUR |
32 |
32 |
33 |
34 |
24 |
24 |
27 |
BQA-BQZ |
MTA-MTZ |
|
DELAWARE |
33 |
33 |
34 |
35 |
25 |
25 |
28 |
BRB-BRZ |
MUA-MUZ |
|
DES MOINES |
34 |
34 |
35 |
36 |
N |
N |
29 |
BSA-BUZ |
MVA-MYZ |
|
DICKINSON |
35 |
35 |
36 |
37 |
26 |
26 |
30 |
BVA-BVZ |
MZA-MZZ |
|
DUBUQUE |
36 |
36 |
7 |
7 |
J |
J |
31 |
BWA-CAZ |
NAA-NEZ |
|
EMMET |
37 |
37 |
37 |
38 |
27 |
27 |
32 |
CBA-CBZ |
NFA-NFZ |
|
FAYETTE |
38 |
38 |
38 |
39 |
28 |
28 |
33 |
CCA-CDZ |
NGA-NHZ |
|
FLOYD |
39 |
39 |
39 |
40 |
29 |
29 |
34 |
CEA-CFZ |
NIA-NIZ |
|
FRANKLIN |
40 |
40 |
40 |
41 |
30 |
30 |
35 |
CGA-CGZ |
NJA-NJZ |
|
FREMONT |
41 |
41 |
41 |
42 |
31 |
31 |
36 |
CHA-CHZ |
NKA-NKZ |
|
GREENE |
42 |
42 |
42 |
43 |
32 |
32 |
37 |
CIA-CIZ |
NLA-NLZ |
|
GRUNDY |
43 |
43 |
43 |
44 |
33 |
33 |
38 |
CJA-CJZ |
NMA-NMZ |
|
GUTHRIE |
44 |
44 |
44 |
45 |
34 |
34 |
39 |
CKA-CKA |
NNA-NNZ |
|
HAMILTON |
45 |
45 |
45 |
46 |
35 |
35 |
40 |
CLA-CMZ |
NOA-NPZ |
|
HANCOCK |
46 |
46 |
46 |
47 |
36 |
36 |
41 |
CNA-CNZ |
NQA-NQZ |
|
HARDIN |
47 |
47 |
47 |
48 |
37 |
37 |
42 |
COA-CPZ |
NRA-NSZ |
|
HARRISON |
48 |
48 |
48 |
49 |
38 |
38 |
43 |
CQA-CQZ |
NTA-NTZ |
|
HENRY |
49 |
49 |
49 |
50 |
39 |
39 |
44 |
CRA-CRZ |
NUA-NUZ |
|
HOWARD |
50 |
50 |
50 |
51 |
40 |
40 |
45 |
CSA-CSZ |
NVA-NVZ |
|
HUMBOLDT |
51 |
51 |
51 |
52 |
41 |
41 |
46 |
CTA-CTZ |
NWA-NWZ |
|
IDA |
52 |
52 |
52 |
53 |
42 |
42 |
47 |
CUA-CUZ |
NXA-NXZ |
|
IOWA |
53 |
53 |
53 |
54 |
43 |
43 |
48 |
CVA-CVZ |
NYA-NYZ |
|
JACKSON |
54 |
54 |
54 |
55 |
44 |
44 |
49 |
CWA-CWZ |
NZA-NZZ |
|
JASPER |
55 |
55 |
55 |
56 |
45 |
P |
50 |
CXA-CYZ |
OAA-OBZ |
|
JEFFERSON |
56 |
56 |
56 |
57 |
46 |
45 |
51 |
CZA-CZZ |
OCA-OCZ |
|
JOHNSON |
57 |
57 |
57 |
58 |
47 |
46 |
52 |
DAA-DDZ |
ODA-OGZ |
|
JONES |
58 |
58 |
58 |
59 |
48 |
47 |
53 |
DEA-DEZ |
OHA-OHZ |
|
KEOKUK |
59 |
59 |
59 |
60 |
49 |
48 |
54 |
DFA-DFZ |
OIA-OIZ |
|
KOSSUTH |
60 |
60 |
60 |
61 |
50 |
49 |
55 |
DGA-DHZ |
OJA-OKZ |
|
LEE |
61 |
61 |
61 |
62 |
51 |
R |
56 |
DIA-DLZ |
OLA-OPZ |
|
LINN |
4 |
4 |
3 |
3 |
C |
C |
57 |
DIA-DLZ |
OLA-OPZ |
|
COUNTY |
1922 |
1923-24 |
1925 |
1926 |
1927 |
1928-29 |
1930-78 |
1975-85 |
1986-96 |
|
LOUISA |
62 |
62 |
62 |
63 |
52 |
50 |
58 |
DUZ-DUZ |
PAA-PAZ |
|
LUCAS |
63 |
63 |
63 |
64 |
53 |
51 |
59 |
DVA-DVZ |
PBA-PBZ |
|
LYON |
64 |
64 |
64 |
65 |
54 |
52 |
60 |
DWA-DWZ |
PCA-PCZ |
|
MADISON |
65 |
65 |
65 |
66 |
55 |
53 |
61 |
DXA-DXZ |
PDA-PDZ |
|
MAHASKA |
66 |
66 |
66 |
67 |
56 |
54 |
62 |
DYA-DZZ |
PEA-PFZ |
|
MARION |
67 |
67 |
67 |
68 |
57 |
55 |
63 |
EAA-EBA |
PGA-PHZ |
|
MARSHALL |
68 |
68 |
68 |
69 |
58 |
56 |
64 |
ECA-EEZ |
PIA-PKZ |
|
MILLS |
69 |
69 |
69 |
70 |
59 |
57 |
65 |
EFA-EFZ |
PLA-PLZ |
|
MITCHELL |
70 |
70 |
70 |
71 |
60 |
58 |
66 |
EGA-EGZ |
PMA-PMZ |
|
MONOMA |
71 |
71 |
71 |
72 |
61 |
59 |
67 |
EHA-EHZ |
PNA-PNZ |
|
MONROE |
72 |
72 |
72 |
73 |
62 |
60 |
68 |
EUA-EIZ |
POA-POZ |
|
MONTGOMERY |
73 |
73 |
73 |
74 |
63 |
61 |
69 |
EJA-EJZ |
PPA-PPZ |
|
MUSCATINE |
74 |
74 |
74 |
75 |
64 |
62 |
70 |
EKA-ELZ |
PQA-PRZ |
|
O'BRIEN |
75 |
75 |
75 |
76 |
65 |
63 |
71 |
EMA-EMZ |
PSA-PSZ |
|
OSCEOLA |
76 |
76 |
76 |
77 |
66 |
64 |
72 |
ENA-ENZ |
PTA-PTZ |
|
PAGE |
77 |
77 |
77 |
78 |
67 |
65 |
73 |
EOA-EOZ |
PUA-PVZ |
|
PALO ALTO |
78 |
78 |
78 |
79 |
68 |
66 |
74 |
EPA-EPZ |
PWA-PWZ |
|
PLYMOUTH |
79 |
79 |
79 |
80 |
69 |
67 |
75 |
EQA-ERZ |
PXA-PYZ |
|
POCAHONTAS |
80 |
80 |
80 |
81 |
70 |
68 |
76 |
ESA-ESZ |
PZA-PZZ |
|
POLK |
1 |
1 |
1 |
1 |
A |
A |
77 |
FAA-FPZ |
QAA-QZZ |
|
POTTAWATTAMIE |
5 |
5 |
5 |
5 |
F |
F |
78 |
FQA-FUZ |
RAA-RGZ |
|
POWESHIEK |
81 |
81 |
81 |
82 |
71 |
69 |
79 |
FVA-FVZ |
RHA-RHZ |
|
RINGGOLD |
82 |
82 |
82 |
83 |
72 |
70 |
80 |
FWA-FWZ |
RIA-RIZ |
|
SAC |
83 |
83 |
83 |
84 |
73 |
71 |
81 |
FXA-FXZ |
RJA-RJZ |
|
SCOTT |
3 |
3 |
4 |
4 |
E |
E |
82 |
GAA-GHZ |
RKA-RVA |
|
SHELBY |
84 |
84 |
84 |
85 |
74 |
72 |
83 |
GIA-GIZ |
RWA-RWZ |
|
SIOUX |
85 |
85 |
85 |
86 |
75 |
73 |
84 |
GJA-GKZ |
RXA-RZZ |
|
STORY |
86 |
86 |
86 |
87 |
76 |
74 |
85 |
GLA-GNZ |
SAA-SDZ |
|
TAMA |
87 |
87 |
87 |
88 |
77 |
75 |
86 |
GOA-GOZ |
SEA-SEZ |
|
TAYLOR |
88 |
88 |
88 |
89 |
78 |
76 |
87 |
GPA-GPZ |
SFA-SFZ |
|
UNION |
89 |
89 |
89 |
90 |
79 |
77 |
88 |
GQA-GQZ |
SGA-SGZ |
|
VAN BUREN |
90 |
90 |
90 |
91 |
80 |
78 |
89 |
GRA-GRZ |
SHA-SHZ |
|
WAPELLO |
91 |
91 |
91 |
92 |
81 |
79 |
90 |
GSA-GUZ |
SIA-SLZ |
|
WARREN |
92 |
92 |
92 |
93 |
82 |
80 |
91 |
GVA-GWZ |
SMA-SOZ |
|
WASHINGTON |
93 |
93 |
93 |
94 |
83 |
81 |
92 |
GXA-GXZ |
SPA-SQZ |
|
WAYNE |
94 |
94 |
94 |
95 |
84 |
82 |
93 |
GYA-GYZ |
SRA-SSZ |
|
WEBSTER |
95 |
95 |
95 |
9 |
L |
L |
94 |
HAA-HCZ |
STA-SVZ |
|
WINNEBAGO |
96 |
96 |
96 |
96 |
85 |
83 |
95 |
HDA-HDZ |
SWA-SXZ |
|
WINNESHIEK |
97 |
97 |
97 |
97 |
86 |
84 |
96 |
HEA-HEZ |
SYA-SZZ |
|
WOODBURY |
2 |
2 |
2 |
2 |
B |
B |
97 |
HFA-HKZ |
TAA-TGZ |
|
WORTH |
98 |
98 |
98 |
98 |
87 |
85 |
98 |
HLA-HLZ |
THA-THZ |
|
WRIGHT |
99 |
99 |
99 |
99 |
88 |
86 |
99 |
HMA-HMZ |
TIA-TJZ |
|
NON-RESIDENT |
00 |
00 |
00 |
00 |
00 |
00 |
00 |
HNA-HNZ |
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