21001 is zip code located in Aberdeen, Maryland. The population is 21,213, making 21001 the largest zipcode in Aberdeen and the 5th largest in Harford County.
There are 6 public schools in 21001 with an average Homefacts rating of C+. The total crime rate for Aberdeen is moderate , and there are 57 registered sex offenders residing in the zip code 21001. Unemployment in 21001 is moderate.