ZIP Code 21045 Map
Census ZIP Code Tabulation Area 21045 in Columbia, MD (Howard County). ZCTA boundaries closely approximate USPS delivery areas.
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ZIP 21045 Demographics
Source: U.S. Census Bureau, American Community Survey 2020-2024 5-year estimates.
Population
40,034
Households
15,414
Median household income
$118,563
Median age
39.6 years
Median home value
$453,700
Median gross rent
$1,777/mo
Owner-occupied homes
68.3%
Bachelor's degree or higher
56.6%
Below poverty level
8.6%
Land area
9.7 sq mi
Population density
4,128 / sq mi