The larger PDF files can be up to 10 MB in size and may take time to load on computers with a slower Internet connection. Please be patient. The maps can be viewed by simply clicking the links or can be saved to your local computer. To do this it is best to right click the "View Map" link and choose "Save Target As..." from the context menu.
DISCLAIMER: The reference post locations on the following maps are approximated and should be used for reference only. Some of the reference post information may now be out-of-date since the production of these maps and will be updated when the Iowa Department of Transportation's Systems Planning Bureau receives more current information.
View the statewide reference post map
All Counties
| County # | County name & map |
|---|---|
| 01 | Adair |
| 02 | Adams |
| 03 | Allamakee |
| 04 | Appanoose |
| 05 | Audubon |
| 06 | Benton |
| 07 | Black Hawk |
| 08 | Boone |
| 09 | Bremer |
| 10 | Buchanan |
| 11 | Buena Vista |
| 12 | Butler |
| 13 | Calhoun |
| 14 | Carroll |
| 15 | Cass |
| 16 | Cedar |
| 17 | Cerro Gordo |
| 18 | Cherokee |
| 19 | Chickasaw |
| 20 | Clarke |
| 21 | Clay |
| 22 | Clayton |
| 23 | Clinton |
| 24 | Crawford |
| 25 | Dallas |
| 26 | Davis |
| 27 | Decatur |
| 28 | Delaware |
| 29 | Des Moines |
| 30 | Dickinson |
| 31 | Dubuque |
| 32 | Emmet |
| 33 | Fayette |
| 34 | Floyd |
| 35 | Franklin |
| 36 | Fremont |
| 37 | Greene |
| 38 | Grundy |
| 39 | Guthrie |
| 40 | Hamilton |
| 41 | Hancock |
| 42 | Hardin |
| 43 | Harrison |
| 44 | Henry |
| 45 | Howard |
| 46 | Humboldt |
| 47 | Ida |
| 48 | Iowa |
| 49 | Jackson |
| 50 | Jasper |
| 51 | Jefferson |
| 52 | Johnson |
| 53 | Jones |
| 54 | Keokuk |
| 55 | Kossuth |
| 56 | Lee |
| 57 | Linn |
| 58 | Louisa |
| 59 | Lucas |
| 60 | Lyon |
| 61 | Madison |
| 62 | Mahaska |
| 63 | Marion |
| 64 | Marshall |
| 65 | Mills |
| 66 | Mitchell |
| 67 | Monona |
| 68 | Monroe |
| 69 | Montgomery |
| 70 | Muscatine |
| 71 | O'Brien |
| 72 | Osceola |
| 73 | Page |
| 74 | Palo Alto |
| 75 | Plymouth |
| 76 | Pocahontas |
| 77 | Polk |
| 78 | Pottawattamie |
| 79 | Poweshiek |
| 80 | Ringgold |
| 81 | Sac |
| 82 | Scott |
| 83 | Shelby |
| 84 | Sioux |
| 85 | Story |
| 86 | Tama |
| 87 | Taylor |
| 88 | Union |
| 89 | Van Buren |
| 90 | Wapello |
| 91 | Warren |
| 92 | Washington |
| 93 | Wayne |
| 94 | Webster |
| 95 | Winnebago |
| 96 | Winneshiek |
| 97 | Woodbury |
| 98 | Worth |
| 99 | Wright |