{
  "zip": "52257",
  "type": "standard",
  "type_source": "inferred",
  "city": "Luzerne",
  "other_place_names": [],
  "state": "IA",
  "state_name": "Iowa",
  "county": {
    "fips": "19011",
    "name": "Benton County",
    "short_name": "Benton"
  },
  "counties": [
    {
      "county_fips": "19011",
      "name": "Benton County",
      "short_name": "Benton",
      "weight": 1,
      "basis": "land_area"
    }
  ],
  "location": {
    "lat": 41.914813,
    "lng": -92.172394,
    "source": "gazetteer_internal_point",
    "timezone": "America/Chicago"
  },
  "is_zcta": true,
  "parent_zcta": null,
  "metro": {
    "cbsa_code": "16300",
    "name": "Cedar Rapids, IA",
    "type": "metro",
    "csa_code": "168",
    "csa_name": "Cedar Rapids-Iowa City, IA"
  },
  "demographics": {
    "population": 216,
    "households": 97,
    "housing_units": 100,
    "median_age": 62.3,
    "median_household_income": 94464,
    "median_home_value": null,
    "median_rent": null,
    "pct_bachelors_plus": 25,
    "mean_commute_min": 23.2,
    "density_per_sqmi": 13
  },
  "business": {
    "establishments": null,
    "employees": null,
    "annual_payroll_thousands": null
  },
  "tax": {
    "irs_returns": 130,
    "irs_agi_thousands": 9507
  },
  "area": {
    "land_sqmi": 16.643,
    "water_sqmi": 0.007
  },
  "nearest_zips": [
    {
      "zip": "52209",
      "miles": 3.9,
      "city": "Blairstown",
      "state": "IA"
    },
    {
      "zip": "52208",
      "miles": 5.1,
      "city": "Belle Plaine",
      "state": "IA"
    },
    {
      "zip": "52249",
      "miles": 6.9,
      "city": "Keystone",
      "state": "IA"
    },
    {
      "zip": "52346",
      "miles": 8.2,
      "city": "Van Horne",
      "state": "IA"
    },
    {
      "zip": "52354",
      "miles": 9.5,
      "city": "Watkins",
      "state": "IA"
    },
    {
      "zip": "52301",
      "miles": 9.9,
      "city": "Marengo",
      "state": "IA"
    },
    {
      "zip": "52225",
      "miles": 10.4,
      "city": "Elberon",
      "state": "IA"
    },
    {
      "zip": "52232",
      "miles": 11.8,
      "city": "Hartwick",
      "state": "IA"
    },
    {
      "zip": "52215",
      "miles": 12,
      "city": "Chelsea",
      "state": "IA"
    },
    {
      "zip": "52315",
      "miles": 12,
      "city": "Newhall",
      "state": "IA"
    }
  ],
  "release": "2026-10-12",
  "attribution": {
    "source": "zipcodes.pro",
    "url": "https://zipcodes.pro/zip/52257",
    "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."
  }
}