The following counties are in the Northwest Iowa Building Trades jurisdiction:

  • Buena Vista
  • Calhoun
  • Carroll
  • Cherokee
  • Clay
  • Crawford
  • Dickinson
  • Emmet
  • Ida
  • Lyon
  • Monona
  • O’Brien
  • Osceola
  • Palo Alto
  • Plymouth
  • Pocahontas
  • Sac
  • Sioux
  • Woodbury