21047 is zip code located in Fallston, Maryland. The population is 12,014, making 21047 the largest zipcode in Fallston and the 9th largest in Harford County.
There are 3 public schools in 21047 with an average Homefacts rating of A. , and there are 6 registered sex offenders residing in the zip code 21047. Unemployment in 21047 is moderate.