BTA061 Burlington, IA
  BTA070 Cedar Rapids, IA
  BTA086 Clinton, IA-Sterling, IL
  BTA105 Davenport, IA-Moline, IL
  BTA111 Des Moines, IA
  BTA118 Dubuque, IA
  BTA150 Fort Dodge, IA
  BTA205 Iowa City, IA
  BTA283 Marshalltown, IA
  BTA285 Mason City, IA
  BTA337 Ottumwa, IA
  BTA421 Sioux City, IA
  BTA462 Waterloo-Cedar Falls, IA