To direct the United States Postal Service to designate a single, unique ZIP Code for Pingree Grove, Illinois.

HR 4597 (119th Congress) is federal legislation introduced in the U.S. House of Representatives on July 22, 2025. Sponsored by Rep. Krishnamoorthi, Raja [D-IL-8]. Current status: Referred to the House Committee on Oversight and Government Reform. (2025-07-22).