ZIP Code 20878 Map
Census ZIP Code Tabulation Area 20878 in Gaithersburg, MD (Montgomery County). ZCTA boundaries closely approximate USPS delivery areas.
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ZIP 20878 Demographics
Source: U.S. Census Bureau, American Community Survey 2020-2024 5-year estimates.
Population
66,115
Households
24,237
Median household income
$144,313
Median age
41.4 years
Median home value
$715,800
Median gross rent
$2,226/mo
Owner-occupied homes
69.2%
Bachelor's degree or higher
70.3%
Below poverty level
5.2%
Land area
20.4 sq mi
Population density
3,233 / sq mi