| FIPS | County | Authorized Markets 2008 | ||
| 19000 | Iowa | 187 | ||
| 19001 | Adair | 2 | ||
| 19003 | Adams | 1 | ||
| 19005 | Allamakee | 0 | ||
| 19007 | Appanoose | 1 | ||
| 19009 | Audubon | 1 | ||
| 19011 | Benton | 2 | ||
| 19013 | Black Hawk | 11 | ||
| 19015 | Boone | 2 | ||
| 19017 | Bremer | 1 | ||
| 19019 | Buchanan | 3 | ||
| 19021 | Buena Vista | 1 | ||
| 19023 | Butler | 0 | ||
| 19025 | Calhoun | 4 | ||
| 19027 | Carroll | 3 | ||
| 19029 | Cass | 2 | ||
| 19031 | Cedar | 1 | ||
| 19033 | Cerro Gordo | 2 | ||
| 19035 | Cherokee | 1 | ||
| 19037 | Chickasaw | 2 | ||
| 19039 | Clarke | 0 | ||
| 19041 | Clay | 1 | ||
| 19043 | Clayton | 5 | ||
| 19045 | Clinton | 3 | ||
| 19047 | Crawford | 2 | ||
| 19049 | Dallas | 2 | ||
| 19051 | Davis | 1 | ||
| 19053 | Decatur | 1 | ||
| 19055 | Delaware | 2 | ||
| 19057 | Des Moines | 2 | ||
| 19059 | Dickinson | 1 | ||
| 19061 | Dubuque | 2 | ||
| 19063 | Emmet | 1 | ||
| 19065 | Fayette | 2 | ||
| 19067 | Floyd | 2 | ||
| 19069 | Franklin | 1 | ||
| 19071 | Fremont | 1 | ||
| 19073 | Greene | 2 | ||
| 19075 | Grundy | 1 | ||
| 19077 | Guthrie | 1 | ||
| 19079 | Hamilton | 0 | ||
| 19081 | Hancock | 2 | ||
| 19083 | Hardin | 4 | ||
| 19085 | Harrison | 3 | ||
| 19087 | Henry | 1 | ||
| 19089 | Howard | 1 | ||
| 19091 | Humboldt | 1 | ||
| 19093 | Ida | 2 | ||
| 19095 | Iowa | 0 | ||
| 19097 | Jackson | 5 | ||
| 19099 | Jasper | 2 | ||
| 19101 | Jefferson | 1 | ||
| 19103 | Johnson | 3 | ||
| 19105 | Jones | 3 | ||
| 19107 | Keokuk | 1 | ||
| 19109 | Kossuth | 2 | ||
| 19111 | Lee | 4 | ||
| 19113 | Linn | 7 | ||
| 19115 | Louisa | 1 | ||
| 19117 | Lucas | 1 | ||
| 19119 | Lyon | 0 | ||
| 19121 | Madison | 1 | ||
| 19123 | Mahaska | 3 | ||
| 19125 | Marion | 1 | ||
| 19127 | Marshall | 2 | ||
| 19129 | Mills | 0 | ||
| 19131 | Mitchell | 0 | ||
| 19133 | Monona | 0 | ||
| 19135 | Monroe | 1 | ||
| 19137 | Montgomery | 1 | ||
| 19139 | Muscatine | 4 | ||
| 19141 | O'Brien | 3 | ||
| 19143 | Osceola | 0 | ||
| 19145 | Page | 2 | ||
| 19147 | Palo Alto | 1 | ||
| 19149 | Plymouth | 2 | ||
| 19151 | Pocahontas | 3 | ||
| 19153 | Polk | 8 | ||
| 19155 | Pottawattamie | 2 | ||
| 19157 | Poweshiek | 2 | ||
| 19159 | Ringgold | 0 | ||
| 19161 | Sac | 1 | ||
| 19163 | Scott | 5 | ||
| 19165 | Shelby | 1 | ||
| 19167 | Sioux | 5 | ||
| 19169 | Story | 2 | ||
| 19171 | Tama | 2 | ||
| 19173 | Taylor | 0 | ||
| 19175 | Union | 1 | ||
| 19177 | Van Buren | 1 | ||
| 19179 | Wapello | 1 | ||
| 19181 | Warren | 1 | ||
| 19183 | Washington | 1 | ||
| 19185 | Wayne | 1 | ||
| 19187 | Webster | 2 | ||
| 19189 | Winnebago | 3 | ||
| 19191 | Winneshiek | 2 | ||
| 19193 | Woodbury | 2 | ||
| 19195 | Worth | 0 | ||
| 19197 | Wright | 3 | ||
| Source Data: Iowa Department of Agriculture and Land Stewardship[1] | ||||