{
  "zip": "60304",
  "type": "standard",
  "type_source": "inferred",
  "city": "Oak Park",
  "other_place_names": [],
  "state": "IL",
  "state_name": "Illinois",
  "county": {
    "fips": "17031",
    "name": "Cook County",
    "short_name": "Cook"
  },
  "counties": [
    {
      "county_fips": "17031",
      "name": "Cook County",
      "short_name": "Cook",
      "weight": 1,
      "basis": "land_area"
    }
  ],
  "location": {
    "lat": 41.872468,
    "lng": -87.789331,
    "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": 16955,
    "households": 6493,
    "housing_units": 6887,
    "median_age": 39.2,
    "median_household_income": 136178,
    "median_home_value": 466700,
    "median_rent": 1388,
    "pct_bachelors_plus": 73.7,
    "mean_commute_min": 30.4,
    "density_per_sqmi": 10938.7
  },
  "business": {
    "establishments": 340,
    "employees": 2964,
    "annual_payroll_thousands": 171046
  },
  "tax": {
    "irs_returns": 7940,
    "irs_agi_thousands": 1054232
  },
  "area": {
    "land_sqmi": 1.55,
    "water_sqmi": 0
  },
  "nearest_zips": [
    {
      "zip": "60303",
      "miles": 0.9,
      "city": "Oak Park",
      "state": "IL"
    },
    {
      "zip": "60301",
      "miles": 1.2,
      "city": "Oak Park",
      "state": "IL"
    },
    {
      "zip": "60130",
      "miles": 1.5,
      "city": "Forest Park",
      "state": "IL"
    },
    {
      "zip": "60302",
      "miles": 1.5,
      "city": "Oak Park",
      "state": "IL"
    },
    {
      "zip": "60644",
      "miles": 1.8,
      "city": "Chicago",
      "state": "IL"
    },
    {
      "zip": "60305",
      "miles": 2.2,
      "city": "River Forest",
      "state": "IL"
    },
    {
      "zip": "60141",
      "miles": 2.7,
      "city": "Hines",
      "state": "IL"
    },
    {
      "zip": "60804",
      "miles": 2.7,
      "city": "Cicero",
      "state": "IL"
    },
    {
      "zip": "60402",
      "miles": 2.7,
      "city": "Berwyn",
      "state": "IL"
    },
    {
      "zip": "60153",
      "miles": 2.9,
      "city": "Maywood",
      "state": "IL"
    }
  ],
  "release": "2026-10-12",
  "attribution": {
    "source": "zipcodes.pro",
    "url": "https://zipcodes.pro/zip/60304",
    "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."
  }
}