{
  "zip": "51331",
  "type": "standard",
  "type_source": "inferred",
  "city": "Arnolds Park",
  "other_place_names": [
    "West Okoboji"
  ],
  "state": "IA",
  "state_name": "Iowa",
  "county": {
    "fips": "19059",
    "name": "Dickinson County",
    "short_name": "Dickinson"
  },
  "counties": [
    {
      "county_fips": "19059",
      "name": "Dickinson County",
      "short_name": "Dickinson",
      "weight": 1,
      "basis": "land_area"
    }
  ],
  "location": {
    "lat": 43.35956,
    "lng": -95.13082,
    "source": "gazetteer_internal_point",
    "timezone": "America/Chicago"
  },
  "is_zcta": true,
  "parent_zcta": null,
  "metro": {
    "cbsa_code": "44020",
    "name": "Spirit Lake, IA",
    "type": "micro",
    "csa_code": "517",
    "csa_name": "Spencer-Spirit Lake, IA"
  },
  "demographics": {
    "population": 935,
    "households": 522,
    "housing_units": 1618,
    "median_age": 64.8,
    "median_household_income": 89167,
    "median_home_value": 448800,
    "median_rent": 497,
    "pct_bachelors_plus": 40.7,
    "mean_commute_min": 16.8,
    "density_per_sqmi": 582.6
  },
  "business": {
    "establishments": 92,
    "employees": 605,
    "annual_payroll_thousands": 27108
  },
  "tax": {
    "irs_returns": 680,
    "irs_agi_thousands": 82285
  },
  "area": {
    "land_sqmi": 1.605,
    "water_sqmi": 0.912
  },
  "nearest_zips": [
    {
      "zip": "51355",
      "miles": 2.1,
      "city": "Okoboji",
      "state": "IA"
    },
    {
      "zip": "51351",
      "miles": 4.1,
      "city": "Milford",
      "state": "IA"
    },
    {
      "zip": "51360",
      "miles": 5.6,
      "city": "Spirit Lake",
      "state": "IA"
    },
    {
      "zip": "51340",
      "miles": 8.3,
      "city": "Fostoria",
      "state": "IA"
    },
    {
      "zip": "51364",
      "miles": 9.4,
      "city": "Terril",
      "state": "IA"
    },
    {
      "zip": "51347",
      "miles": 10.4,
      "city": "Lake Park",
      "state": "IA"
    },
    {
      "zip": "51363",
      "miles": 10.6,
      "city": "Superior",
      "state": "IA"
    },
    {
      "zip": "51338",
      "miles": 14.2,
      "city": "Everly",
      "state": "IA"
    },
    {
      "zip": "51301",
      "miles": 14.3,
      "city": "Spencer",
      "state": "IA"
    },
    {
      "zip": "51345",
      "miles": 16,
      "city": "Harris",
      "state": "IA"
    }
  ],
  "release": "2026-10-12",
  "attribution": {
    "source": "zipcodes.pro",
    "url": "https://zipcodes.pro/zip/51331",
    "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."
  }
}