{
  "zip": "51503",
  "type": "standard",
  "type_source": "inferred",
  "city": "Council Bluffs",
  "other_place_names": [],
  "state": "IA",
  "state_name": "Iowa",
  "county": {
    "fips": "19155",
    "name": "Pottawattamie County",
    "short_name": "Pottawattamie"
  },
  "counties": [
    {
      "county_fips": "19155",
      "name": "Pottawattamie County",
      "short_name": "Pottawattamie",
      "weight": 0.8464,
      "basis": "land_area"
    },
    {
      "county_fips": "19129",
      "name": "Mills County",
      "short_name": "Mills",
      "weight": 0.1536,
      "basis": "land_area"
    }
  ],
  "location": {
    "lat": 41.22322,
    "lng": -95.784481,
    "source": "gazetteer_internal_point",
    "timezone": "America/Chicago"
  },
  "is_zcta": true,
  "parent_zcta": null,
  "metro": {
    "cbsa_code": "36540",
    "name": "Omaha, NE-IA",
    "type": "metro",
    "csa_code": "420",
    "csa_name": "Omaha-Fremont, NE-IA"
  },
  "demographics": {
    "population": 37972,
    "households": 15442,
    "housing_units": 16425,
    "median_age": 40.6,
    "median_household_income": 79010,
    "median_home_value": 262300,
    "median_rent": 991,
    "pct_bachelors_plus": 30.5,
    "mean_commute_min": 18.7,
    "density_per_sqmi": 312.1
  },
  "business": {
    "establishments": 721,
    "employees": 10010,
    "annual_payroll_thousands": 479760
  },
  "tax": {
    "irs_returns": 16990,
    "irs_agi_thousands": 1472938
  },
  "area": {
    "land_sqmi": 121.682,
    "water_sqmi": 1.486
  },
  "nearest_zips": [
    {
      "zip": "51502",
      "miles": 4.8,
      "city": "Council Bluffs",
      "state": "IA"
    },
    {
      "zip": "51501",
      "miles": 4.9,
      "city": "Council Bluffs",
      "state": "IA"
    },
    {
      "zip": "51554",
      "miles": 7.6,
      "city": "Mineola",
      "state": "IA"
    },
    {
      "zip": "68108",
      "miles": 7.7,
      "city": "Omaha",
      "state": "NE"
    },
    {
      "zip": "68110",
      "miles": 7.8,
      "city": "Omaha",
      "state": "NE"
    },
    {
      "zip": "68005",
      "miles": 8,
      "city": "Bellevue",
      "state": "NE"
    },
    {
      "zip": "68102",
      "miles": 8.1,
      "city": "Omaha",
      "state": "NE"
    },
    {
      "zip": "51510",
      "miles": 8.2,
      "city": "Carter Lake",
      "state": "IA"
    },
    {
      "zip": "68101",
      "miles": 8.3,
      "city": "Omaha",
      "state": "NE"
    },
    {
      "zip": "68103",
      "miles": 8.3,
      "city": "Omaha",
      "state": "NE"
    }
  ],
  "release": "2026-10-12",
  "attribution": {
    "source": "zipcodes.pro",
    "url": "https://zipcodes.pro/zip/51503",
    "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."
  }
}