21756 is zip code located in Keedysville, Maryland. The population is 3,333, making 21756 the largest zipcode in Keedysville and the 9th largest in Washington County.
There are 0 public schools in 21756 with an average Homefacts rating of NA. , and there are 1 registered sex offenders residing in the zip code 21756. Unemployment in 21756 is moderate.