{
  "zip": "61437",
  "type": "standard",
  "type_source": "inferred",
  "city": "Gladstone",
  "other_place_names": [
    "Gulfport"
  ],
  "state": "IL",
  "state_name": "Illinois",
  "county": {
    "fips": "17071",
    "name": "Henderson County",
    "short_name": "Henderson"
  },
  "counties": [
    {
      "county_fips": "17071",
      "name": "Henderson County",
      "short_name": "Henderson",
      "weight": 1,
      "basis": "land_area"
    }
  ],
  "location": {
    "lat": 40.846983,
    "lng": -90.992111,
    "source": "gazetteer_internal_point",
    "timezone": "America/Chicago"
  },
  "is_zcta": true,
  "parent_zcta": null,
  "metro": {
    "cbsa_code": "15460",
    "name": "Burlington, IA-IL",
    "type": "micro",
    "csa_code": "161",
    "csa_name": "Burlington-Fort Madison, IA-IL"
  },
  "demographics": {
    "population": 549,
    "households": 254,
    "housing_units": 308,
    "median_age": 56.1,
    "median_household_income": 66000,
    "median_home_value": 131300,
    "median_rent": 1299,
    "pct_bachelors_plus": 5.9,
    "mean_commute_min": 23.3,
    "density_per_sqmi": 14.5
  },
  "business": {
    "establishments": 6,
    "employees": 58,
    "annual_payroll_thousands": 3951
  },
  "tax": {
    "irs_returns": 330,
    "irs_agi_thousands": 23676
  },
  "area": {
    "land_sqmi": 37.756,
    "water_sqmi": 1.921
  },
  "nearest_zips": [
    {
      "zip": "61418",
      "miles": 6.4,
      "city": "Biggsville",
      "state": "IL"
    },
    {
      "zip": "61425",
      "miles": 6.6,
      "city": "Carman",
      "state": "IL"
    },
    {
      "zip": "52601",
      "miles": 7.2,
      "city": "Burlington",
      "state": "IA"
    },
    {
      "zip": "61469",
      "miles": 8.7,
      "city": "Oquawka",
      "state": "IL"
    },
    {
      "zip": "61480",
      "miles": 9.2,
      "city": "Stronghurst",
      "state": "IL"
    },
    {
      "zip": "52650",
      "miles": 11,
      "city": "Sperry",
      "state": "IA"
    },
    {
      "zip": "52655",
      "miles": 11.6,
      "city": "West Burlington",
      "state": "IA"
    },
    {
      "zip": "61454",
      "miles": 11.7,
      "city": "Lomax",
      "state": "IL"
    },
    {
      "zip": "61447",
      "miles": 12.1,
      "city": "Kirkwood",
      "state": "IL"
    },
    {
      "zip": "61460",
      "miles": 12.2,
      "city": "Media",
      "state": "IL"
    }
  ],
  "release": "2026-10-12",
  "attribution": {
    "source": "zipcodes.pro",
    "url": "https://zipcodes.pro/zip/61437",
    "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."
  }
}