St. Mary's County, Maryland Cities (2025)

10 cities

City
Rank
2025 Pop.
2020 Pop.
Change
Density
Area (mi²)
Type
California114,07914,7301.06%1,09412.87 CDP
Lexington Park214,01512,9341.15%2,3116.06 CDP
Wildewood39,2956,6917.15%3,2892.83 CDP
Leonardtown45,2304,5892.51%1,3583.85 Town
Mechanicsville51,8521,7241.26%3575.19 CDP
Callaway61,5201,3207.12%3194.76 CDP
Charlotte Hall71,4081,7400%2785.06 CDP
Piney Point81,0751,0361.32%7171.50 CDP
Tall Timbers94845700.21%3581.35 CDP
St. George Island10196426-2%2490.79 CDP

St. Mary's County Cities Summary

Largest City

California is the largest city in St. Mary's County, with a population of 14,079.

Smallest City

St. George Island is the smallest city in St. Mary's County, with a population of 196.

10 Largest Cities

There are 10 cities in St. Mary's County, Maryland.

Location of St. Mary's County