{
  "zip": "51638",
  "type": "standard",
  "type_source": "inferred",
  "city": "Essex",
  "other_place_names": [],
  "state": "IA",
  "state_name": "Iowa",
  "county": {
    "fips": "19145",
    "name": "Page County",
    "short_name": "Page"
  },
  "counties": [
    {
      "county_fips": "19145",
      "name": "Page County",
      "short_name": "Page",
      "weight": 0.9802,
      "basis": "land_area"
    },
    {
      "county_fips": "19137",
      "name": "Montgomery County",
      "short_name": "Montgomery",
      "weight": 0.0198,
      "basis": "land_area"
    }
  ],
  "location": {
    "lat": 40.837439,
    "lng": -95.266231,
    "source": "gazetteer_internal_point",
    "timezone": "America/Chicago"
  },
  "is_zcta": true,
  "parent_zcta": null,
  "metro": null,
  "demographics": {
    "population": 1258,
    "households": 569,
    "housing_units": 623,
    "median_age": 50.5,
    "median_household_income": 59107,
    "median_home_value": 120700,
    "median_rent": 606,
    "pct_bachelors_plus": 17.9,
    "mean_commute_min": 25.5,
    "density_per_sqmi": 15.6
  },
  "business": {
    "establishments": 30,
    "employees": 89,
    "annual_payroll_thousands": 2730
  },
  "tax": {
    "irs_returns": 610,
    "irs_agi_thousands": 43332
  },
  "area": {
    "land_sqmi": 80.437,
    "water_sqmi": 0.189
  },
  "nearest_zips": [
    {
      "zip": "51603",
      "miles": 7.4,
      "city": "Shenandoah",
      "state": "IA"
    },
    {
      "zip": "51601",
      "miles": 8.2,
      "city": "Shenandoah",
      "state": "IA"
    },
    {
      "zip": "51645",
      "miles": 8.7,
      "city": "Imogene",
      "state": "IA"
    },
    {
      "zip": "51656",
      "miles": 9.2,
      "city": "Yorktown",
      "state": "IA"
    },
    {
      "zip": "51636",
      "miles": 11.9,
      "city": "Coin",
      "state": "IA"
    },
    {
      "zip": "51566",
      "miles": 12.4,
      "city": "Red Oak",
      "state": "IA"
    },
    {
      "zip": "51632",
      "miles": 13.1,
      "city": "Clarinda",
      "state": "IA"
    },
    {
      "zip": "51639",
      "miles": 13.2,
      "city": "Farragut",
      "state": "IA"
    },
    {
      "zip": "51573",
      "miles": 13.3,
      "city": "Stanton",
      "state": "IA"
    },
    {
      "zip": "51649",
      "miles": 13.7,
      "city": "Randolph",
      "state": "IA"
    }
  ],
  "release": "2026-10-12",
  "attribution": {
    "source": "zipcodes.pro",
    "url": "https://zipcodes.pro/zip/51638",
    "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."
  }
}