ZIP Code 18109 Map
Census ZIP Code Tabulation Area 18109 in Allentown, PA (Lehigh County). ZCTA boundaries closely approximate USPS delivery areas.
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ZIP 18109 Demographics
Source: U.S. Census Bureau, American Community Survey 2020-2024 5-year estimates.
Population
18,446
Households
7,030
Median household income
$58,031
Median age
36.6 years
Median home value
$198,800
Median gross rent
$1,331/mo
Owner-occupied homes
52.1%
Bachelor's degree or higher
16%
Below poverty level
18.1%
Land area
8.2 sq mi
Population density
2,236 / sq mi