Gregory County Post Offices

405 Mellette St
Bonesteel, South Dakota 57317

833 Main St
Burke, South Dakota 57523

412 Main St
Fairfax, South Dakota 57335

517 Main St
Gregory, South Dakota 57533

727 Herrick Ave
Herrick, South Dakota 57538

Gregory County

There are 5 US Post Offices in Gregory County serving a total of 4,086 residents equating to 817 residents per post office. It's estimated that approximately 6,522 packages are handled across the 5 county post offices annually. Gregory County is a county located in the U.S. state of South Dakota. As of the 2010 census, the population was 4,271. Its county seat is Burke. The county was created in 1862 and organized in 1898. It was named for the politician J. Shaw Gregory."