{
  "zip": "21221",
  "type": "standard",
  "type_source": "inferred",
  "city": "Essex",
  "other_place_names": [
    "Middle River",
    "Rosedale"
  ],
  "state": "MD",
  "state_name": "Maryland",
  "county": {
    "fips": "24005",
    "name": "Baltimore County",
    "short_name": "Baltimore"
  },
  "counties": [
    {
      "county_fips": "24005",
      "name": "Baltimore County",
      "short_name": "Baltimore",
      "weight": 1,
      "basis": "land_area"
    }
  ],
  "location": {
    "lat": 39.292125,
    "lng": -76.436995,
    "source": "gazetteer_internal_point",
    "timezone": "America/New_York"
  },
  "is_zcta": true,
  "parent_zcta": null,
  "metro": {
    "cbsa_code": "12580",
    "name": "Baltimore-Columbia-Towson, MD",
    "type": "metro",
    "csa_code": "548",
    "csa_name": "Washington-Baltimore-Arlington, DC-MD-VA-WV-PA"
  },
  "demographics": {
    "population": 43487,
    "households": 17286,
    "housing_units": 18442,
    "median_age": 42.4,
    "median_household_income": 67340,
    "median_home_value": 271500,
    "median_rent": 1310,
    "pct_bachelors_plus": 21,
    "mean_commute_min": 29.5,
    "density_per_sqmi": 2893
  },
  "business": {
    "establishments": 623,
    "employees": 6064,
    "annual_payroll_thousands": 284596
  },
  "tax": {
    "irs_returns": 20920,
    "irs_agi_thousands": 1221816
  },
  "area": {
    "land_sqmi": 15.032,
    "water_sqmi": 6.3
  },
  "nearest_zips": [
    {
      "zip": "21222",
      "miles": 3.7,
      "city": "Dundalk",
      "state": "MD"
    },
    {
      "zip": "21219",
      "miles": 4.3,
      "city": "Sparrows Point",
      "state": "MD"
    },
    {
      "zip": "21220",
      "miles": 4.3,
      "city": "Middle River",
      "state": "MD"
    },
    {
      "zip": "21237",
      "miles": 4.6,
      "city": "Rosedale",
      "state": "MD"
    },
    {
      "zip": "21224",
      "miles": 5.7,
      "city": "Baltimore",
      "state": "MD"
    },
    {
      "zip": "21052",
      "miles": 6,
      "city": "Fort Howard",
      "state": "MD"
    },
    {
      "zip": "21027",
      "miles": 6.1,
      "city": "Chase",
      "state": "MD"
    },
    {
      "zip": "21206",
      "miles": 6.3,
      "city": "Baltimore",
      "state": "MD"
    },
    {
      "zip": "21205",
      "miles": 6.8,
      "city": "Baltimore",
      "state": "MD"
    },
    {
      "zip": "21162",
      "miles": 7,
      "city": "White Marsh",
      "state": "MD"
    }
  ],
  "release": "2026-10-12",
  "attribution": {
    "source": "zipcodes.pro",
    "url": "https://zipcodes.pro/zip/21221",
    "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."
  }
}