Iowa Code § 556.8: Property held by state courts and public officers and agencies — abandonment.

All intangible personal property held for the owner by any court, public corporation, public authority, agency, instrumentality, employee, or public officer of this state, or the United States, or a political subdivision of the state, another state, or the United States, that has remained unclaimed by the owner for more than two years after becoming payable or distributable is presumed abandoned.