Iowa's Best Contractors
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Registry data · 2026-08-03

Every Iowa county, counted: where the state's 18,897 contractors are

All 99 counties with published listings, from Polk County down — the complete geographic picture of Iowa's contractor registry.

Registrations issued or renewed per month · trailing 9 months

Every county with published listings, ranked by active registrations

01Polk County2,066 active
02Linn County998 active
03Johnson County534 active
04Scott County447 active
05Dubuque County390 active
06Dallas County374 active
07Black Hawk County355 active
08Woodbury County340 active
09Story County333 active
10Warren County330 active
11Iowa County304 active
12Pottawattamie County300 active
13Marshall County151 active
14Sioux County149 active
15Muscatine County142 active
16Webster County139 active
17Cerro Gordo County136 active
18Buchanan County134 active
19Jasper County131 active
20Clinton County130 active
21Boone County128 active
22Delaware County122 active
23Washington County120 active
24Dickinson County118 active
25Benton County116 active
26Lee County109 active
27Madison County108 active
28Marion County108 active
29Jackson County105 active
30Plymouth County104 active
31Jones County102 active
32Des Moines County101 active
33Wapello County101 active
34Carroll County100 active
35Cedar County94 active
36Hardin County94 active
37Fayette County89 active
38Clay County88 active
39Bremer County86 active
40Clayton County86 active
41Mahaska County83 active
42Poweshiek County81 active
43Winneshiek County76 active
44Guthrie County75 active
45Crawford County74 active
46Kossuth County74 active
47Tama County66 active
48Allamakee County64 active
49Hamilton County64 active
50Wayne County63 active
51Cass County62 active
52Harrison County62 active
53Henry County61 active
54Buena Vista County60 active
55Mills County60 active
56Butler County57 active
57Page County57 active
58Jefferson County55 active
59Emmet County52 active
60Shelby County51 active
61Davis County50 active
62Lyon County50 active
63Montgomery County49 active
64Union County49 active
65Howard County46 active
66Appanoose County44 active
67Greene County44 active
68Humboldt County44 active
69Cherokee County43 active
70Obrien County43 active
71Palo Alto County42 active
72Adair County41 active
73Winnebago County41 active
74Chickasaw County40 active
75Grundy County40 active
76Sac County40 active
77Mitchell County39 active
78Wright County39 active
79Lucas County38 active
80Calhoun County37 active
81Monona County36 active
82Decatur County34 active
83Fremont County31 active
84Keokuk County31 active
85Worth County31 active
86Floyd County30 active
87Hancock County30 active
88Louisa County30 active
89Franklin County29 active
90Clarke County28 active
91Monroe County27 active
92Ringgold County24 active
93Van Buren County24 active
94Audubon County22 active
95Osceola County20 active
96Ida County19 active
97Adams County18 active
98Taylor County18 active
99Pocahontas County16 active

Reporting on Iowa construction? These numbers are free to cite with a link to this page or the directory. As of August 2026, this is the complete public picture of Iowa’s registered contractor population.