{
  "zip": "21837",
  "type": "standard",
  "type_source": "inferred",
  "city": "Mardela Springs",
  "other_place_names": [],
  "state": "MD",
  "state_name": "Maryland",
  "county": {
    "fips": "24045",
    "name": "Wicomico County",
    "short_name": "Wicomico"
  },
  "counties": [
    {
      "county_fips": "24045",
      "name": "Wicomico County",
      "short_name": "Wicomico",
      "weight": 1,
      "basis": "land_area"
    }
  ],
  "location": {
    "lat": 38.454567,
    "lng": -75.76632,
    "source": "gazetteer_internal_point",
    "timezone": "America/New_York"
  },
  "is_zcta": true,
  "parent_zcta": null,
  "metro": {
    "cbsa_code": "41540",
    "name": "Salisbury, MD",
    "type": "metro",
    "csa_code": "480",
    "csa_name": "Salisbury-Ocean Pines, MD"
  },
  "demographics": {
    "population": 2891,
    "households": 1123,
    "housing_units": 1179,
    "median_age": 40.8,
    "median_household_income": 62880,
    "median_home_value": 227400,
    "median_rent": 1115,
    "pct_bachelors_plus": 18,
    "mean_commute_min": 25.6,
    "density_per_sqmi": 65.9
  },
  "business": {
    "establishments": 33,
    "employees": 190,
    "annual_payroll_thousands": 6829
  },
  "tax": {
    "irs_returns": 1220,
    "irs_agi_thousands": 76396
  },
  "area": {
    "land_sqmi": 43.859,
    "water_sqmi": 3.251
  },
  "nearest_zips": [
    {
      "zip": "21830",
      "miles": 4.3,
      "city": "Hebron",
      "state": "MD"
    },
    {
      "zip": "21861",
      "miles": 6,
      "city": "Sharptown",
      "state": "MD"
    },
    {
      "zip": "21659",
      "miles": 8.5,
      "city": "Rhodesdale",
      "state": "MD"
    },
    {
      "zip": "21801",
      "miles": 8.7,
      "city": "Salisbury",
      "state": "MD"
    },
    {
      "zip": "21856",
      "miles": 8.7,
      "city": "Quantico",
      "state": "MD"
    },
    {
      "zip": "21802",
      "miles": 8.8,
      "city": "Salisbury",
      "state": "MD"
    },
    {
      "zip": "21803",
      "miles": 8.8,
      "city": "Salisbury",
      "state": "MD"
    },
    {
      "zip": "21869",
      "miles": 9.4,
      "city": "Vienna",
      "state": "MD"
    },
    {
      "zip": "21835",
      "miles": 10.7,
      "city": "Linkwood",
      "state": "MD"
    },
    {
      "zip": "19940",
      "miles": 11,
      "city": "Delmar",
      "state": "DE"
    }
  ],
  "release": "2026-10-12",
  "attribution": {
    "source": "zipcodes.pro",
    "url": "https://zipcodes.pro/zip/21837",
    "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."
  }
}