Volume of Traffic on the Primary Road System

2012 Routes by county

County Number	County Name	Routes
1	ADAIR	25	80	92
2	ADAMS	34	148
3	ALLAMAKEE	9	18	26	51	52	76
4	APPANOOSE	2	5	202
5	AUDUBON	44	71	173
6	BENTON	8	21	30	150	151	218	380
7	BLACK HAWK	20	21	27	57	58	63	175	218	281	380	934
8	BOONE	17	30	144	169	210	930
9	BREMER	3	63	93	116	188	218
10	BUCHANAN	20	150	187	281	380
11	BUENA VISTA	3	7	10	71	110
12	BUTLER	3	14	57	188
13	CALHOUN	4	7	20	175
14	CARROLL	30	71	141
15	CASS	6	48	71	80	83	92	148	173
16	CEDAR	6	30	38	80	130
17	CERRO GORDO	18	35	65	122
18	CHEROKEE	3	7	31	59	143
19	CHICKASAW	18	24	63	218	346
20	CLARKE	34	35	69	152
21	CLAY	10	18	71
22	CLAYTON	3	13	18	52	56	76	128
23	CLINTON	30	61	67	136
24	CRAWFORD	30	37	39	59	141
25	DALLAS	6	17	44	80	141	144	169	210
26	DAVIS	2	16	63	202
27	DECATUR	2	35	69
28	DELAWARE	3	13	20	38
29	DES MOINES	34	61
30	DICKINSON	9	71	86
31	DUBUQUE	3	20	32	52	61	136	151	946
32	EMMET	4	9	15
33	FAYETTE	3	18	56	93	150	187
34	FLOYD	14	18	218
35	FRANKLIN	3	35	65
36	FREMONT	2	29	59	275	333
37	GREENE	4	25	30	144
38	GRUNDY	14	20	57	175
39	GUTHRIE	4	25	44	141
40	HAMILTON	17	20	35	69	175
41	HANCOCK	17	18	69
42	HARDIN	20	57	65	175
43	HARRISON	29	30	37	44	127	183	191
44	HENRY	34	78	218	438
45	HOWARD	9	63
46	HUMBOLDT	3	15	169
47	IDA	20	31	59	175
48	IOWA	6	21	80	149	151	212	220
49	JACKSON	52	61	62	64	67
50	JASPER	6	14	65	80	117	163	224	330
51	JEFFERSON	1	34	78
52	JOHNSON	1	6	22	80	218	380	965
53	JONES	1	38	64	136	151
54	KEOKUK	1	21	22	23	78	92	149
55	KOSSUTH	9	15	18	169
56	LEE	2	16	27	61	136	218	961
57	LINN	1	13	30	100	151	380	922
58	LOUISA	61	70	78	92
59	LUCAS	14	34	65
60	LYON	9	18	75	182
61	MADISON	80	92	169
62	MAHASKA	23	63	92	102	146	163	903
63	MARION	5	14	92	163	316
64	MARSHALL	14	30	96	146	330
65	MILLS	29	34	59	275	370
66	MITCHELL	9	218
67	MONONA	29	37	141	175	183
68	MONROE	5	34	137
69	MONTGOMERY	34	48	71
70	MUSCATINE	6	22	38	61	70	92
71	O'BRIEN	10	18	59	60	143
72	OSCEOLA	9	59	60
73	PAGE	2	48	59	71
74	PALO ALTO	4	18
75	PLYMOUTH	3	12	60	75	140	404	470
76	POCAHONTAS	3	4	7	10	15
77	POLK	5	6	17	28	35	44	65	69	80	141	160	163	235	316	415
78	POTTAWATTAMIE	6	29	59	80	83	92	165	191	192	275	480	680
79	POWESHIEK	6	21	63	80	85	146
80	RINGGOLD	2	25	169
81	SAC	20	39	71	110	175	196
82	SCOTT	6	22	61	67	74	80	130	280	461
83	SHELBY	37	44	59	173	191
84	SIOUX	10	12	18	60	75	450
85	STORY	30	35	65	69	210	330
86	TAMA	8	21	30	63	96	146
87	TAYLOR	2	148
88	UNION	25	34	169
89	VAN BUREN	1	2	16	81	98
90	WAPELLO	16	34	63	137	149
91	WARREN	5	28	35	65	69	92	316	368
92	WASHINGTON	1	22	78	92	218
93	WAYNE	2	14	65
94	WEBSTER	7	20	144	169	175	926
95	WINNEBAGO	9	69
96	WINNESHIEK	9	24	52	139	150
97	WOODBURY	12	20	29	31	75	77	129	140	141	175	376
98	WORTH	9	35	65	69
99	WRIGHT	3	17	35	69

Office of Systems Planning

Volume of Traffic on the Primary Road System

2012 Routes by county