{
  "zip": "51528",
  "type": "standard",
  "type_source": "inferred",
  "city": "Dow City",
  "other_place_names": [
    "Buck Grove",
    "Arion"
  ],
  "state": "IA",
  "state_name": "Iowa",
  "county": {
    "fips": "19047",
    "name": "Crawford County",
    "short_name": "Crawford"
  },
  "counties": [
    {
      "county_fips": "19047",
      "name": "Crawford County",
      "short_name": "Crawford",
      "weight": 1,
      "basis": "land_area"
    }
  ],
  "location": {
    "lat": 41.908916,
    "lng": -95.501172,
    "source": "gazetteer_internal_point",
    "timezone": "America/Chicago"
  },
  "is_zcta": true,
  "parent_zcta": null,
  "metro": null,
  "demographics": {
    "population": 674,
    "households": 285,
    "housing_units": 291,
    "median_age": 36.6,
    "median_household_income": 63173,
    "median_home_value": 117900,
    "median_rent": 742,
    "pct_bachelors_plus": 13.1,
    "mean_commute_min": 20.1,
    "density_per_sqmi": 9.5
  },
  "business": {
    "establishments": 18,
    "employees": 88,
    "annual_payroll_thousands": 2168
  },
  "tax": {
    "irs_returns": 390,
    "irs_agi_thousands": 27234
  },
  "area": {
    "land_sqmi": 71.124,
    "water_sqmi": 0.201
  },
  "nearest_zips": [
    {
      "zip": "51520",
      "miles": 4.7,
      "city": "Arion",
      "state": "IA"
    },
    {
      "zip": "51529",
      "miles": 8,
      "city": "Dunlap",
      "state": "IA"
    },
    {
      "zip": "51530",
      "miles": 9.1,
      "city": "Earling",
      "state": "IA"
    },
    {
      "zip": "51527",
      "miles": 9.7,
      "city": "Defiance",
      "state": "IA"
    },
    {
      "zip": "51442",
      "miles": 11.3,
      "city": "Denison",
      "state": "IA"
    },
    {
      "zip": "51562",
      "miles": 12.7,
      "city": "Panama",
      "state": "IA"
    },
    {
      "zip": "51439",
      "miles": 12.8,
      "city": "Charter Oak",
      "state": "IA"
    },
    {
      "zip": "51060",
      "miles": 13.2,
      "city": "Ute",
      "state": "IA"
    },
    {
      "zip": "51578",
      "miles": 14.1,
      "city": "Westphalia",
      "state": "IA"
    },
    {
      "zip": "51579",
      "miles": 15.1,
      "city": "Woodbine",
      "state": "IA"
    }
  ],
  "release": "2026-10-12",
  "attribution": {
    "source": "zipcodes.pro",
    "url": "https://zipcodes.pro/zip/51528",
    "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."
  }
}