18020 is zip code located in Bethlehem, Pennsylvania. The population is 20,648, making 18020 the 4th largest zipcode in Bethlehem and the 8th largest in Lehigh County.
There are 3 public schools in 18020 with an average Homefacts rating of C. , and there are 0 registered sex offenders residing in the zip code 18020. Unemployment in 18020 is very high.