{
  "zip": "21640",
  "type": "standard",
  "type_source": "inferred",
  "city": "Henderson",
  "other_place_names": [],
  "state": "MD",
  "state_name": "Maryland",
  "county": {
    "fips": "24011",
    "name": "Caroline County",
    "short_name": "Caroline"
  },
  "counties": [
    {
      "county_fips": "24011",
      "name": "Caroline County",
      "short_name": "Caroline",
      "weight": 0.8018,
      "basis": "land_area"
    },
    {
      "county_fips": "24035",
      "name": "Queen Anne's County",
      "short_name": "Queen Anne's",
      "weight": 0.1982,
      "basis": "land_area"
    }
  ],
  "location": {
    "lat": 39.068141,
    "lng": -75.820948,
    "source": "gazetteer_internal_point",
    "timezone": "America/New_York"
  },
  "is_zcta": true,
  "parent_zcta": null,
  "metro": null,
  "demographics": {
    "population": 1163,
    "households": 511,
    "housing_units": 531,
    "median_age": 39.9,
    "median_household_income": 53558,
    "median_home_value": 268500,
    "median_rent": null,
    "pct_bachelors_plus": 13.9,
    "mean_commute_min": 36,
    "density_per_sqmi": 45.3
  },
  "business": {
    "establishments": 11,
    "employees": 65,
    "annual_payroll_thousands": 1986
  },
  "tax": {
    "irs_returns": 750,
    "irs_agi_thousands": 46786
  },
  "area": {
    "land_sqmi": 25.662,
    "water_sqmi": 0.082
  },
  "nearest_zips": [
    {
      "zip": "21636",
      "miles": 3.9,
      "city": "Goldsboro",
      "state": "MD"
    },
    {
      "zip": "21644",
      "miles": 4.4,
      "city": "Ingleside",
      "state": "MD"
    },
    {
      "zip": "21607",
      "miles": 4.9,
      "city": "Barclay",
      "state": "MD"
    },
    {
      "zip": "19964",
      "miles": 5.5,
      "city": "Marydel",
      "state": "DE"
    },
    {
      "zip": "21670",
      "miles": 5.5,
      "city": "Templeville",
      "state": "MD"
    },
    {
      "zip": "21649",
      "miles": 5.7,
      "city": "Marydel",
      "state": "MD"
    },
    {
      "zip": "21639",
      "miles": 7.8,
      "city": "Greensboro",
      "state": "MD"
    },
    {
      "zip": "21660",
      "miles": 8.6,
      "city": "Ridgely",
      "state": "MD"
    },
    {
      "zip": "21668",
      "miles": 8.6,
      "city": "Sudlersville",
      "state": "MD"
    },
    {
      "zip": "21623",
      "miles": 8.7,
      "city": "Church Hill",
      "state": "MD"
    }
  ],
  "release": "2026-10-12",
  "attribution": {
    "source": "zipcodes.pro",
    "url": "https://zipcodes.pro/zip/21640",
    "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."
  }
}