Office hours for the Iowa Utilities Board are 8 a.m. to 4:30 p.m. Monday through Friday. The office is closed Saturday, Sunday, and official state holidays.
Mail or deliver a letter to the IUB:
Iowa Utilities Board
1375 E. Court Ave.
Des Moines, IA 50319-0069
Call the IUB:
Utility customer complaints or customer inquiries - 877-565-4450 (toll-free) or 515-725-7321
General agency number (non-complaint related) - 515-725-7300
See agency phone list
Fax the IUB:
Submit a utility-related complaint electronically:
Online complaint form
Map to the Office: