About Mercer County, MO
Mercer County is situated in northwest Missouri and it is the 81st most populous county in the state. It covers an area of 710 square miles and has a population of 3,830 according to the 2010 census. Princeton is its county seat and principal city. The median household income in Mercer County was estimated at $44,155 in 2019 which allows for an affordable cost of living for residents here.
Location Details
Zip Codes: 64673 64661
Cost of Living: -29.1% lower