21661 is zip code located in Rock Hall, Maryland. The population is 2,708, making 21661 the largest zipcode in Rock Hall and the 2nd largest in Kent County.
There are 1 public schools in 21661 with an average Homefacts rating of B-. The total crime rate for Rock Hall is very low , and there are 6 registered sex offenders residing in the zip code 21661. Unemployment in 21661 is very high.