Platte City
- County:
- Platte County
- County Seat:
- Yes
- Area (mi²):
- 3.966
- State:
- Missouri
Platte City is a city located in Platte County, Missouri. Platte City has a 2026 population of 4,867. It is also the county seat of Platte County. Platte City is currently growing at a rate of 0.47% annually and its population has increased by 1.82% since the most recent census, which recorded a population of 4,780 in 2020.