Postmaster Finder
Post Offices by ZIP Code

Remember! Many discontinued Post Offices are not listed. We cannot respond to requests. See Publication 119, Sources of Historical Information on Post Offices, Postal Employees, Mail Routes, and Mail Contractors, for information on how you can research Post Offices.

Action: Enter three digits in the "From ZIP Code" and in the "To ZIP Code" boxes. Click Search to process. Click Clear to reset.

Result: A numerical listing of Post Offices in our database by ZIP Code. The list will include the establishment date where research is complete on an office and the discontinuance date, if applicable.