Maryland Heights
- County:
- St. Louis County
- County Seat:
- No
- Area (mi²):
- 21.881
- State:
- Missouri
Maryland Heights is a city located in St. Louis County, Missouri. Maryland Heights has a 2026 population of 27,671. Maryland Heights is currently declining at a rate of -0.02% annually and its population has decreased by -2.07% since the most recent census, which recorded a population of 28,257 in 2020.