ZIP Code 21105
About Maryland Line
Maryland Line is an unincorporated town in Baltimore County, Maryland, United States, located just south of the Mason–Dixon line below York County, Pennsylvania. It is accessible via exits 36 and 37 from I-83. In the 19th century, the community was known as "New Market," but the name was changed to avoid confusion with a town in Frederick County bearing the same name.
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Area Profile
US Census (ACS 5-year · Gazetteer)
31
population
360
people / sq mi
12
housing units
12
households
0.1
land area (sq mi)