ZIP Code 21042 Map
Census ZIP Code Tabulation Area 21042 in Ellicott City, MD (Howard County). ZCTA boundaries closely approximate USPS delivery areas.
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ZIP 21042 Demographics
Source: U.S. Census Bureau, American Community Survey 2020-2024 5-year estimates.
Population
43,327
Households
15,099
Median household income
$190,061
Median age
45.1 years
Median home value
$706,400
Median gross rent
$2,183/mo
Owner-occupied homes
84.7%
Bachelor's degree or higher
72.9%
Below poverty level
3.3%
Land area
37 sq mi
Population density
1,171 / sq mi