Iowa Code § 554H.3: Firearm registry or record.

1. Except for records kept during the regular course of a criminal investigation or criminal prosecution, or as otherwise required by law, a person, unit of government, or governmental organization shall not knowingly and willfully keep or cause to be kept a record or registry of privately owned firearms or of the owners of privately owned firearms.

2. This section shall not be construed to prohibit an owner or an owner’s representative from maintaining a list of the owner’s privately owned firearms, or to prohibit a law enforcement agency from maintaining a list, registry, or record of firearms that have been stolen or reported stolen.