Mercer County is a county located in the U.S. state of Missouri. As of the most recent data available, the county has a population of approximately 3,757 people, with a population density of about 8.26 persons per square mile.
The county spans a total land area of 455.00 square miles (1,178.00 square kilometers). The administrative center and county seat is Princeton, which often serves as a hub for local governance and services. The largest city within the county by population is Princeton.
Geographically, Mercer County experiences varied elevations, with its highest point at Mercer 1,074 ft and its lowest point at Princeton 932 ft. The region operates in the UTC-6.