Missouri Post Office

Find Missouri post offices and USPS mailing boxes. Post offices provide information on bulk mail services, domestic mail delivery, international shipping, change of address, mail forwarding, PO boxes, and passport services.


Post Offices by County

Adair County Andrew County Atchison County Audrain County Barry County Barton County Bates County Benton County Bollinger County Boone County Buchanan County Butler County Caldwell County Callaway County Camden County Cape Girardeau County Carroll County Carter County Cass County Cedar County Chariton County Christian County Clark County Clay County Clinton County Cole County Cooper County Crawford County Dade County Dallas County Daviess County DeKalb County Dent County Douglas County Dunklin County Franklin County Gasconade County Gentry County Greene County Grundy County Harrison County Henry County Hickory County Holt County Howard County Howell County Iron County Jackson County Jasper County Jefferson County Johnson County Knox County Laclede County Lafayette County Lawrence County Lewis County Lincoln County Linn County Livingston County Macon County Madison County Maries County Marion County McDonald County Mercer County Miller County Mississippi County Moniteau County Monroe County Montgomery County Morgan County New Madrid County Newton County Nodaway County Oregon County Osage County Ozark County Pemiscot County Perry County Pettis County Phelps County Pike County Platte County Polk County Pulaski County Putnam County Ralls County Randolph County Ray County Reynolds County Ripley County Saline County Schuyler County Scotland County Scott County Shannon County Shelby County St. Charles County St. Clair County St. Francois County St. Louis County St. Louis Ste. Genevieve County Stoddard County Stone County Sullivan County Taney County Texas County Vernon County Warren County Washington County Wayne County Webster County Worth County Wright County

What does the Post Office do?

A post office is a facility operated by the U.S. Postal Service (USPS) which receives, processes and delivers mail. Many people have a post office box to receive mail, and post offices also sell stamps, packaging supplies and sometimes money orders. Other responsibilities of post offices, especially small ones, include providing passport applications. And, some post offices also contain local branches of federal government offices, including courts.

Commonly asked questions about Post Offices

What is bulk mail?

Bulk mail is classified as mail that is sent out in larger quantities and at a cheaper rate than individual packages or letters would be. This type of mail is often used by businesses for advertising purposes. The reason why businesses receive lower rates for bulk mail is that they first presort the mail before the post office delivers it.

Which online services does the Post Office offer?

The postal service remains competitive in the mail and package delivery industry by keeping up with new technologies and competitive services. For example, the post office offers package pick-up services as well as printing services for businesses that wish to do bulk mailings.

Are Forever Stamps really good forever?

Yes, according to law the Forever Stamps will always be worth the current rate for sending a first class letter, whatever it may be. Even if you bought a Forever Stamp in 2011, the first year they were sold, you could still use that same stamp today to send a first class letter.