Platte 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 73,781 people, with a population density of about 175.67 persons per square mile.
The county spans a total land area of 420.00 square miles (1,088.00 square kilometers). The administrative center and county seat is Platte City, which often serves as a hub for local governance and services. The largest city within the county by population is Parkville.
Geographically, Platte County experiences varied elevations, with its highest point at Platte Woods 1,010 ft and its lowest point at Riverside 0 ft. The region operates in the UTC-6.