Grassley’s DC office
Phone: 202-224-3744
Fax: 202-224-6020

Grassley’s Des Moines office
Phone: 515-288-1145
Fax: 515-288-5097

Grassley’s Cedar Rapids office
Phone: 319-363-6832
Fax: 319-363-7179

Grassley’s Davenport office
Phone: 563-322-4331
Fax: 563-322-8552

Grassley’s Sioux City office
Phone: 712-233-1860
Fax: 712-233-1634

Grassley’s Waterloo office
Phone: 319-232-6657
Fax: 319-232-9965

Grassley’s Council Bluffs office
Phone: 712-322-7103
Fax: 712-322-7196