PassportMap

Dayton Post Office

Post office

426 1st Ave., Dayton, TN 37321

(423) 570-7265

Hours are not published. Call before you go.

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

Dayton Post Office accepts new U.S. passport applications in person in Dayton, TN. First-time and child visits are booked on the USPS scheduler. Search ZIP 37321. How to apply · How to renew