{
  "zip": "57233",
  "type": "standard",
  "type_source": "inferred",
  "city": "Erwin",
  "other_place_names": [],
  "state": "SD",
  "state_name": "South Dakota",
  "county": {
    "fips": "46077",
    "name": "Kingsbury County",
    "short_name": "Kingsbury"
  },
  "counties": [
    {
      "county_fips": "46077",
      "name": "Kingsbury County",
      "short_name": "Kingsbury",
      "weight": 1,
      "basis": "land_area"
    }
  ],
  "location": {
    "lat": 44.509922,
    "lng": -97.399324,
    "source": "gazetteer_internal_point",
    "timezone": "America/Chicago"
  },
  "is_zcta": true,
  "parent_zcta": null,
  "metro": null,
  "demographics": {
    "population": 350,
    "households": 57,
    "housing_units": 71,
    "median_age": 15.4,
    "median_household_income": 82917,
    "median_home_value": null,
    "median_rent": null,
    "pct_bachelors_plus": 5.2,
    "mean_commute_min": 22,
    "density_per_sqmi": 9.5
  },
  "business": {
    "establishments": null,
    "employees": null,
    "annual_payroll_thousands": null
  },
  "tax": {
    "irs_returns": null,
    "irs_agi_thousands": null
  },
  "area": {
    "land_sqmi": 36.727,
    "water_sqmi": 0
  },
  "nearest_zips": [
    {
      "zip": "57221",
      "miles": 7.1,
      "city": "Bryant",
      "state": "SD"
    },
    {
      "zip": "57249",
      "miles": 8.9,
      "city": "Lake Preston",
      "state": "SD"
    },
    {
      "zip": "57214",
      "miles": 10.3,
      "city": "Badger",
      "state": "SD"
    },
    {
      "zip": "57248",
      "miles": 11.6,
      "city": "Lake Norden",
      "state": "SD"
    },
    {
      "zip": "57231",
      "miles": 12.9,
      "city": "De Smet",
      "state": "SD"
    },
    {
      "zip": "57241",
      "miles": 15.7,
      "city": "Hayti",
      "state": "SD"
    },
    {
      "zip": "57212",
      "miles": 15.7,
      "city": "Arlington",
      "state": "SD"
    },
    {
      "zip": "57278",
      "miles": 16.9,
      "city": "Willow Lake",
      "state": "SD"
    },
    {
      "zip": "57242",
      "miles": 18.4,
      "city": "Hazel",
      "state": "SD"
    },
    {
      "zip": "57271",
      "miles": 18.5,
      "city": "Vienna",
      "state": "SD"
    }
  ],
  "release": "2026-10-12",
  "attribution": {
    "source": "zipcodes.pro",
    "url": "https://zipcodes.pro/zip/57233",
    "sources_url": "https://zipcodes.pro/sources",
    "license": "Facts derived from US public-domain data (Census, IRS) and GeoNames (CC BY 4.0). Attribution appreciated: zipcodes.pro",
    "note": "A null value means the source did not publish that figure for this ZIP code. It does not mean zero."
  }
}