Iowa Code § 64.19: Approval of bonds.

Bonds shall be approved:

1. By the governor, in case of state and district officers, elective or appointive.

2. By the board of supervisors, in case of county officers, township clerks, and assessors.

3. By a judge of the district court for the county in question, in case of members of the board of supervisors.

4. By the township clerk, in case of other township officers.

5. By the council, or as provided by ordinance in case of city officers.

6. By the state court administrator in case of district court clerks and first deputy clerks.