21539 is zip code located in Lonaconing, Maryland. The population is 2,738, making 21539 the largest zipcode in Lonaconing and the 4th largest in Allegany County.
There are 2 public schools in 21539 with an average Homefacts rating of B. , and there are 5 registered sex offenders residing in the zip code 21539. Unemployment in 21539 is high.