Mount Briar, Maryland
Mount Briar is an unincorporated community and census-designated place in Washington County, Maryland, United States. It covers about 0.62 square miles (1.61 square kilometers), all land, at an elevation of 551 feet (168 meters). The population was 170 in 2020, up from 160 in 2010. The ZIP code is 21756, and the area codes are 240 and 301. Mount Briar lies in the Eastern Time Zone (EST/EDT). Coordinates are 39.4425°N, 77.6872°W.
This page was last edited on 3 February 2026, at 18:58 (CET).