ZIP Code 18104 Map
Census ZIP Code Tabulation Area 18104 in Allentown, PA (Lehigh County). ZCTA boundaries closely approximate USPS delivery areas.
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ZIP 18104 Demographics
Source: U.S. Census Bureau, American Community Survey 2020-2024 5-year estimates.
Population
48,683
Households
18,532
Median household income
$94,601
Median age
40.6 years
Median home value
$336,400
Median gross rent
$1,637/mo
Owner-occupied homes
71%
Bachelor's degree or higher
46.1%
Below poverty level
8.3%
Land area
23 sq mi
Population density
2,121 / sq mi