{
  "zip": "60523",
  "type": "standard",
  "type_source": "inferred",
  "city": "Oak Brook",
  "other_place_names": [
    "Westmont",
    "Oakbrook Terrace",
    "Elmhurst",
    "Lombard",
    "Downers Grove"
  ],
  "state": "IL",
  "state_name": "Illinois",
  "county": {
    "fips": "17043",
    "name": "DuPage County",
    "short_name": "DuPage"
  },
  "counties": [
    {
      "county_fips": "17043",
      "name": "DuPage County",
      "short_name": "DuPage",
      "weight": 0.9984,
      "basis": "land_area"
    },
    {
      "county_fips": "17031",
      "name": "Cook County",
      "short_name": "Cook",
      "weight": 0.0016,
      "basis": "land_area"
    }
  ],
  "location": {
    "lat": 41.836395,
    "lng": -87.953173,
    "source": "gazetteer_internal_point",
    "timezone": "America/Chicago"
  },
  "is_zcta": true,
  "parent_zcta": null,
  "metro": {
    "cbsa_code": "16980",
    "name": "Chicago-Naperville-Elgin, IL-IN",
    "type": "metro",
    "csa_code": "176",
    "csa_name": "Chicago-Naperville, IL-IN-WI"
  },
  "demographics": {
    "population": 10144,
    "households": 4433,
    "housing_units": 4830,
    "median_age": 57.1,
    "median_household_income": 118194,
    "median_home_value": 782100,
    "median_rent": 854,
    "pct_bachelors_plus": 62.7,
    "mean_commute_min": 29.8,
    "density_per_sqmi": 1132.9
  },
  "business": {
    "establishments": 1419,
    "employees": 37633,
    "annual_payroll_thousands": 3626348
  },
  "tax": {
    "irs_returns": 5550,
    "irs_agi_thousands": 2064538
  },
  "area": {
    "land_sqmi": 8.954,
    "water_sqmi": 0.334
  },
  "nearest_zips": [
    {
      "zip": "60521",
      "miles": 2.8,
      "city": "Hinsdale",
      "state": "IL"
    },
    {
      "zip": "60514",
      "miles": 2.8,
      "city": "Clarendon Hills",
      "state": "IL"
    },
    {
      "zip": "60181",
      "miles": 3,
      "city": "Villa Park",
      "state": "IL"
    },
    {
      "zip": "60559",
      "miles": 3.1,
      "city": "Westmont",
      "state": "IL"
    },
    {
      "zip": "60154",
      "miles": 3.4,
      "city": "Westchester",
      "state": "IL"
    },
    {
      "zip": "60162",
      "miles": 3.4,
      "city": "Hillside",
      "state": "IL"
    },
    {
      "zip": "60526",
      "miles": 3.6,
      "city": "La Grange Park",
      "state": "IL"
    },
    {
      "zip": "60558",
      "miles": 3.6,
      "city": "Western Springs",
      "state": "IL"
    },
    {
      "zip": "60515",
      "miles": 4.1,
      "city": "Downers Grove",
      "state": "IL"
    },
    {
      "zip": "60163",
      "miles": 4.2,
      "city": "Berkeley",
      "state": "IL"
    }
  ],
  "release": "2026-10-12",
  "attribution": {
    "source": "zipcodes.pro",
    "url": "https://zipcodes.pro/zip/60523",
    "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."
  }
}