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Federal Functional Classification Maps


Counties

01-Adair 26-Davis 51-Jefferson 76-Pocahontas
02-Adams 27-Decatur 52-Johnson 77-Polk
03-Allamakee 28-Delaware 53-Jones 78-Pottawattamie
04-Appanoose 29-Des Moines 54-Keokuk 79-Poweshiek
05-Audubon 30-Dickinson 55-Kossuth 80-Ringgold
06-Benton 31-Dubuque 56-Lee 81-Sac
07-Black Hawk 32-Emmet 57-Linn 82-Scott
08-Boone 33-Fayette 58-Louisa 83-Shelby
09-Bremer 34-Floyd 59-Lucas 84-Sioux
10-Buchanan 35-Franklin 60-Lyon 85-Story
11-Buena Vista 36-Fremont 61-Madison 86-Tama
12-Butler 37-Greene 62-Mahaska 87-Taylor
13-Calhoun 38-Grundy 63-Marion 88-Union
14-Carroll 39-Guthrie 64-Marshall 89-Van Buren
15-Cass 40-Hamilton 65-Mills 90-Wapello
16-Cedar 41-Hancock 66-Mitchell 91-Warren
17-Cerro Gordo 42-Hardin 67-Monona 92-Washington
18-Cherokee 43-Harrison 68-Monroe 93-Wayne
19-Chickasaw 44-Henry 69-Montgomery 94-Webster
20-Clarke 45-Howard 70-Muscatine 95-Winnebago
21-Clay 46-Humboldt 71-O'Brien 96-Winneshiek
22-Clayton 47-Ida 72-Osceola 97-Woodbury
23-Clinton 48-Iowa 73-Page 98-Worth
24-Crawford 49-Jackson 74-Palo Alto 99-Wright
25-Dallas 50-Jasper 75-Plymouth

Urban Areas:

Algona Decorah Knoxville Pella
Ames Denison Le Mars Perry
Anamosa Des Moines Manchester Red Oak
Atlantic Dubuque Maquoketa Shenandoah
Boone Estherville Marshalltown Sioux Center
Burlington Fairfield Mason City Sioux City
Carroll Fort Dodge McGregor Spencer
Cedar Rapids Fort Madison Mount Pleasant Spirit Lake
Centerville Glenwood Mount Vernon Storm Lake
Charles City Grinnell Muscatine Vinton
Clarinda Humboldt Nevada Washington
Clear Lake Independence Newton Waterloo
Clinton Indianola Oelwein Waverly
Council Bluffs Iowa City Orange City Webster City
Creston Iowa Falls Oskaloosa Winterset
Davenport Keokuk Ottumwa