21084 is zip code located in Jarrettsville, Maryland. The population is 7,548, making 21084 the largest zipcode in Jarrettsville and the 10th largest in Harford County.
There are 2 public schools in 21084 with an average Homefacts rating of A-. , and there are 5 registered sex offenders residing in the zip code 21084. Unemployment in 21084 is moderate.