Detailed information about ZIP code 18104 located in Allentown, Pennsylvania. This postal code covers standard areas with a population of 36,028 residents.
The ZIP code 18104 is part of the USPS (United States Postal Service) system serving the Allentown area. This code ensures efficient mail delivery and geographic organization within Pennsylvania.

Detailed information about ZIP code 18104 located in Allentown, Pennsylvania. This postal code covers standard areas with a population of 36,028 residents.
The ZIP code 18104 is part of the USPS (United States Postal Service) system serving the Allentown area. This code ensures efficient mail delivery and geographic organization within Pennsylvania.
| City | Name | Zip Code | Type | Population |
|---|---|---|---|---|
| Allentown, PA | PRIMARY | 18104 | STANDARD | 36.028 |
| City | Name | Zip Code | Type |
|---|---|---|---|
| Allentown, PA | PRIMARY | 18104 | STANDARD |