Osborne County Post Offices

703 Mill St Ste B
Alton, Kansas 67623

808 Morgan Ave
Downs, Kansas 67437

402 Elm St
Natoma, Kansas 67651

233 W Main St
Osborne, Kansas 67473

411 Market St
Portis, Kansas 67474

Osborne County

There are 5 US Post Offices in Osborne County serving a total of 3,890 residents equating to 778 residents per post office. It's estimated that approximately 6,209 packages are handled across the 5 county post offices annually. Osborne County (standard abbreviation: OB) is a county located in the U.S. state of Kansas. As of the 2010 census, the county population was 3,858. The largest city and county seat is Osborne."