About 18104 - Allentown, Pennsylvania
ZIP code 18104 covers the community of Allentown in Pennsylvania, the United States. This area falls under Allentown County County.
Census data puts the population of this ZIP code at 1,553 residents. It's a quieter, less populous area than the typical Pennsylvania ZIP code (avg. ~22,902).
Median household income is about $55,400 (below the Pennsylvania average).
Other ZIP code codes in Pennsylvania serve areas such as New Castle, Philadelphia, Clearfield.