↑ Adams County (1996–2003)
↑ Allamakee County (1996–2003)
↑ Appanoose County (1996–2003)
↑ Audubon County (1996–2003)
↑ Buchanan County (1996–2003)
↑ Cedar County (1996–2003)
↑ Cherokee County (1996–2003)
↑ Chickasaw County (1996–2003)
↑ Clayton County (1996–2003)
↑ Clinton County (1996–2003)
↑ Crawford County (1996–2003)
↑ Dallas County (1996–2003)
↑ Davis County (1996–2003)
↑ Decatur County (1996–2003)
↑ Delaware County (1996–2003)
↑ Des Moines County (1996–2003)
↑ Dickinson County (1996–2003)
↑ Emmet County (1996–2003)
↑ Fremont County (1996–2003)
↑ Greene County (1996–2003)
↑ Grundy County (1996–2003)
↑ Hamilton County (1996–2003)
↑ Jasper County (1996–2003)
↑ Johnson County (1996–2003)
↑ Lee County (1996–2003)
↑ Louisa County (1996–2003)
↑ Lucas County (1996–2003)
↑ Plymouth County (1996–2003)
↑ Pocahontas County (1996–2003)
↑ Poweshiek County (1996–2003)
↑ Ringgold County (1996–2003)
↑ Sac County (1996–2003)
↑ Sioux County (1996–2003)
↑ Story County (1996–2003)
↑ Tama County (1996–2003)
↑ Taylor County (1996–2003)
↑ Union County (1996–2003)
↑ Van Buren County (1996–2003)
↑ Wapello County (1996–2003)
↑ Warren County (1996–2003)
↑ Washington County (1996–2003)
↑ Webster County (1996–2003)
↑ Woodbury County (1996–2003)