Post Offices by county

Enter a county name, select a state, and click Search to see a list of the Post Offices entered for that county. If research is completed on an office, you will get the establishment date and discontinuance date, if applicable.

The county name must be an exact match. For example, type Saint Louis County not St. Louis County, and Mc Minn — not McMinn — County, Tennessee.

Remember! Many discontinued Post Offices are not listed. See the FAQs about Postmaster Finder.

For ,


You may need to scroll the results table left and right to see all of the columns.

ZIP Code Post Office Date Established Data Discontinued