San Mar, Maryland
San Mar, Maryland  | |
|---|---|
| Coordinates: 39°33′08″N 77°38′27″W / 39.55222°N 77.64083°W | |
| Country | United States | 
| State | Maryland | 
| County | Washington | 
| Area | |
 • Total  | 0.47 sq mi (1.21 km2) | 
| • Land | 0.47 sq mi (1.21 km2) | 
| • Water | 0.00 sq mi (0.00 km2) | 
| Elevation | 568 ft (173 m) | 
| Population  (2020)  | |
 • Total  | 366 | 
| • Density | 785.41/sq mi (303.19/km2) | 
| Time zone | UTC−5 (Eastern (EST)) | 
| • Summer (DST) | UTC−4 (EDT) | 
| ZIP code | 21713  | 
| Area code(s) | 240 and 301 | 
| FIPS code | 24-70300 | 
| GNIS feature ID | 2389798 | 
San Mar is a census-designated place (CDP) in Washington County, Maryland, United States. The population was 515 at the 2000 census.