51101 is zip code located in Sioux City, Iowa. The population is 767, making 51101 the 7th largest zipcode in Sioux City.
There are 0 public schools in 51101 with an average Homefacts rating of NA. The total crime rate for Sioux City is moderate , and there are 36 registered sex offenders residing in the zip code 51101. Unemployment in 51101 is moderate.