21157 is zip code located in Westminster, Maryland. The population is 37,990, making 21157 the largest zipcode in Westminster and the 2nd largest in Carroll County.
There are 16 public schools in 21157 with an average Homefacts rating of A-. The total crime rate for Westminster is low , and there are 37 registered sex offenders residing in the zip code 21157. Unemployment in 21157 is moderate.
Zip codes within Westminster include 21158.