28756 is zip code located in Mill Spring, North Carolina. The population is 4,171, making 28756 the largest zipcode in Mill Spring and the 3rd largest in Polk County.
There are 3 public schools in 28756 with an average Homefacts rating of A-. , and there are 2 registered sex offenders residing in the zip code 28756. Unemployment in 28756 is moderate.