There are 6 US Post Offices in Pike County serving a total of 18,237 residents equating to 3,040 residents per post office. It's estimated that approximately 29,108 packages are handled across the 6 county post offices annually. Pike County is a county located in the eastern portion of the U.S. state of Missouri. As of the 2010 census, the population was 18,516. Its county seat is Bowling Green. The county was organized December 4, 1818, and named for explorer Zebulon M. Pike. The folksong Sweet Betsy from Pike is generally thought to refer to Pike County, Missouri. Pike County is said to be the home of Momo (The Missouri Monster), with the first reported sightings in the 1970s dating back to various locations throughout the county.