ZIP Code 21111
About Monkton
Monkton is an unincorporated community in northern Baltimore County, Maryland, United States. It has a population of approximately 4,856 people. The community is 35 square miles (91 km2) in area, with approximately 138 inhabitants per square mile (53/km2). As an unincorporated area, Monkton has no legally defined boundaries, and its ZIP code (21111) includes a portion of adjacent Harford County.
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Area Profile
US Census (ACS 5-year · Gazetteer)
4,690
population
$135,781
median household income
133
people / sq mi
$585,400
median home value
$1,458
median gross rent
48.6
median age
1,902
housing units
1,857
households
35.3
land area (sq mi)
Key places in 21111
Points of interest
- pharmacy
- fast_food
Brands
- Subway (1)