21783 is zip code located in Smithsburg, Maryland. The population is 9,073, making 21783 the largest zipcode in Smithsburg and the 4th largest in Washington County.
There are 3 public schools in 21783 with an average Homefacts rating of A-. The total crime rate for Smithsburg is very low , and there are 5 registered sex offenders residing in the zip code 21783. Unemployment in 21783 is moderate.