18101 is zip code located in Allentown, Pennsylvania. The population is 3,773, making 18101 the 6th largest zipcode in Allentown.
There are 2 public schools in 18101 with an average Homefacts rating of D. The total crime rate for Allentown is moderate , and there are 0 registered sex offenders residing in the zip code 18101. Unemployment in 18101 is high.