Contact Interstates Companies

How Can We Help?

If you have a general inquiry or would like to receive more information about Interstates Companies, please call us at (800) 827-1662 or fill out our simple contact form.

If you have questions about a career with Interstates Companies, visit

Interstates Companies Corporate Headquarters

1520 North Main Avenue
PO Box 260
Sioux Center, IA 51250


(712) 722-1662


(712) 722-1667

Other Offices

If you have inquiries about how Interstates can help you with a specific project, you may also contact the specific business unit.

Interstates Engineering
Interstates Construction
Interstates Control Systems & Manufacturing Intelligence
Interstates Prefabrication