ZIP Code 18103 Map
Census ZIP Code Tabulation Area 18103 in Allentown, PA (Lehigh County). ZCTA boundaries closely approximate USPS delivery areas.
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ZIP 18103 Demographics
Source: U.S. Census Bureau, American Community Survey 2020-2024 5-year estimates.
Population
48,746
Households
18,880
Median household income
$72,895
Median age
39.1 years
Median home value
$272,700
Median gross rent
$1,368/mo
Owner-occupied homes
63.1%
Bachelor's degree or higher
27.6%
Below poverty level
10.3%
Land area
17.2 sq mi
Population density
2,841 / sq mi