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ZIP Code 18103

Allentown, Pennsylvania, United States

Standard ZIP Eastern Time (ET)
48,746
Population
1,096.9
Per sq mile
Lehigh
County

About ZIP Code 18103

ZIP code 18103 is assigned to Allentown, Lehigh County, Pennsylvania, United States. It falls in the Eastern Time (ET) zone. The estimated population of this ZIP code area is 48,746 with a density of 1,096.9 people per square mile.

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Location Details

ZIP Code18103
CityAllentown
CountyLehigh County
StatePennsylvania
CountryUnited States
TimezoneEastern Time (ET)
Timezone IDAmerica/New_York
Latitude40.5722
Longitude-75.4814
ZIP TypeStandard ZIP

Post Office

Address1000 POSTAL RD SIDE
CityALLENTOWN
StatePA

Nearby ZIP Codes in Pennsylvania

18102
Allentown
18101
Allentown
18049
Emmaus
18034
Center Valley
18032
Catasauqua
18046
East Texas

Frequently Asked Questions

What city is ZIP code 18103 in?

ZIP code 18103 is in Allentown, Lehigh County, Pennsylvania, United States.

What county is ZIP code 18103 in?

ZIP code 18103 is in Lehigh County, Pennsylvania.

What timezone is ZIP code 18103 in?

ZIP code 18103 is in the Eastern Time (ET) zone (America/New_York).

What is the population of ZIP code 18103?

The estimated population of ZIP code 18103 is 48,746 people with a density of 1,096.9 people per square mile.

What state is ZIP code 18103 in?

ZIP code 18103 is in Pennsylvania (PA), United States.

📋 Data Source: United States Postal Service (USPS) & US Census Bureau (ZCTA data) · Public domain government data. For official ZIP code information visit tools.usps.com. Data is periodically updated but may not reflect the most recent changes.