Checked
ZIP Code 18103
Allentown, PA, Lehigh County
Population
48,746
Land area
17.2sq mi
People per sq mi
2,841
City
Allentown
ZIP 18103 and nearby ZIP codes
ZIP 18103 at a glance
- ZIP 18103 (Allentown) is about 9.8 times as dense as Pennsylvania as a whole.
- Households here earn a median of $72,895 a year, 7% less than the Pennsylvania figure of $77,971.
- A typical owner-occupied home is valued at $272,700 (7% above Pennsylvania) and median rent is $1,368 a month.
Local data for ZIP 18103
Counts from official public data
Housing and community stats
ZIP 18103, American Community Survey 2020-2024
Median household income
$72,895
Poverty rate
10.3%
Median home value
$272,700
Prices +8.5% in a year
Median rent
$1,368/mo
Homeownership
63.1%
Bachelor's or higher
27.6%
Median age
39.1
Average commute
24.5 min
Economy and federal money
Businesses, pandemic loans and political donations
Business establishments
1,044
ZIP Business Patterns 2023
Employees
28,576
$1.8B annual payroll
PPP loans
$103M
1,178 loans
Campaign donations
$198K
17% D, 29% R, 2026 cycle
Environment and hazard risk
ZIP 18103, from FEMA, NOAA and EPA
Natural hazard risk
Relatively Moderate
Top: cold wave
Storm events since 1996
1,282
Countywide, mostly thunderstorm wind
Flood insurance policies
423
0.4% of homes, county
July high / Jan low
86° / 22°F
47.4 inches of rain a year
Frequently asked questions
- What city is ZIP code 18103?
- ZIP code 18103 is in Allentown, PA (Lehigh County).
- What county is ZIP code 18103 in?
- ZIP code 18103 is mostly in Lehigh County, Pennsylvania.
- How many people live in ZIP code 18103?
- About 48,746 people live in the 18103 ZIP Code Tabulation Area, based on American Community Survey 5-year estimates.
Source: U.S. Census Bureau (ZIP Code Tabulation Areas, American Community Survey) · Data as of 12/31/2023. ZIP Code Tabulation Areas closely match, but are not identical to, USPS ZIP code delivery areas.