Iowa Code § 501A.401: Registered office and registered agent.

A cooperative must continuously maintain in this state each of the following:

1. A registered office that may be the same as any of its places of business.

2. A registered agent who may be any of the following:

a. An individual who is a resident of this state and whose business office is identical with the registered office.

b. A cooperative, domestic corporation, domestic limited liability company, or not-for-profit domestic corporation whose business office is identical with the registered office.

c. A foreign cooperative, foreign corporation, foreign limited liability company, or not-for-profit foreign corporation authorized to transact business in this state whose business office is identical with the registered office.