51111 is zip code located in Sioux City, Iowa. The population is 228, making 51111 the 8th largest zipcode in Sioux City.
There are 0 public schools in 51111 with an average Homefacts rating of NA. The total crime rate for Sioux City is moderate , and there are 2 registered sex offenders residing in the zip code 51111. Unemployment in 51111 is moderate.