Castalia Post Office

Post office

105 N. Water St., Castalia, OH 44824

Hours are not published. Call before you go.

Hours and addresses come from the State Department listing, updated November 2, 2026.

Book at USPS Directions Facilities in Castalia Facilities in Ohio

Castalia Post Office accepts new U.S. passport applications in person in Castalia, OH. First-time and child visits are booked on the USPS scheduler. Search ZIP 44824. How to apply · How to renew