{
  "zip": "57521",
  "type": "standard",
  "type_source": "inferred",
  "city": "Belvidere",
  "other_place_names": [
    "Corn Creek"
  ],
  "state": "SD",
  "state_name": "South Dakota",
  "county": {
    "fips": "46095",
    "name": "Mellette County",
    "short_name": "Mellette"
  },
  "counties": [
    {
      "county_fips": "46095",
      "name": "Mellette County",
      "short_name": "Mellette",
      "weight": 0.5028,
      "basis": "land_area"
    },
    {
      "county_fips": "46071",
      "name": "Jackson County",
      "short_name": "Jackson",
      "weight": 0.4972,
      "basis": "land_area"
    }
  ],
  "location": {
    "lat": 43.792089,
    "lng": -101.182802,
    "source": "gazetteer_internal_point",
    "timezone": "America/Chicago"
  },
  "is_zcta": true,
  "parent_zcta": null,
  "metro": null,
  "demographics": {
    "population": 314,
    "households": 65,
    "housing_units": 105,
    "median_age": 30,
    "median_household_income": 57813,
    "median_home_value": null,
    "median_rent": null,
    "pct_bachelors_plus": 25.1,
    "mean_commute_min": 27.7,
    "density_per_sqmi": 0.7
  },
  "business": {
    "establishments": null,
    "employees": null,
    "annual_payroll_thousands": null
  },
  "tax": {
    "irs_returns": null,
    "irs_agi_thousands": null
  },
  "area": {
    "land_sqmi": 427.978,
    "water_sqmi": 2.312
  },
  "nearest_zips": [
    {
      "zip": "57562",
      "miles": 13.3,
      "city": "Okaton",
      "state": "SD"
    },
    {
      "zip": "57543",
      "miles": 17.2,
      "city": "Kadoka",
      "state": "SD"
    },
    {
      "zip": "57547",
      "miles": 24.1,
      "city": "Long Valley",
      "state": "SD"
    },
    {
      "zip": "57560",
      "miles": 24.6,
      "city": "Norris",
      "state": "SD"
    },
    {
      "zip": "57579",
      "miles": 24.7,
      "city": "White River",
      "state": "SD"
    },
    {
      "zip": "57559",
      "miles": 24.9,
      "city": "Murdo",
      "state": "SD"
    },
    {
      "zip": "57577",
      "miles": 30,
      "city": "Wanblee",
      "state": "SD"
    },
    {
      "zip": "57552",
      "miles": 32.5,
      "city": "Midland",
      "state": "SD"
    },
    {
      "zip": "57566",
      "miles": 33.7,
      "city": "Parmelee",
      "state": "SD"
    },
    {
      "zip": "57567",
      "miles": 35.2,
      "city": "Philip",
      "state": "SD"
    }
  ],
  "release": "2026-10-12",
  "attribution": {
    "source": "zipcodes.pro",
    "url": "https://zipcodes.pro/zip/57521",
    "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."
  }
}