{
  "zip": "21042",
  "type": "standard",
  "type_source": "inferred",
  "city": "Ellicott City",
  "other_place_names": [
    "Columbia"
  ],
  "state": "MD",
  "state_name": "Maryland",
  "county": {
    "fips": "24027",
    "name": "Howard County",
    "short_name": "Howard"
  },
  "counties": [
    {
      "county_fips": "24027",
      "name": "Howard County",
      "short_name": "Howard",
      "weight": 1,
      "basis": "land_area"
    }
  ],
  "location": {
    "lat": 39.277181,
    "lng": -76.894602,
    "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": 43327,
    "households": 15099,
    "housing_units": 15368,
    "median_age": 45.1,
    "median_household_income": 190061,
    "median_home_value": 706400,
    "median_rent": 2183,
    "pct_bachelors_plus": 72.9,
    "mean_commute_min": 28.6,
    "density_per_sqmi": 1171
  },
  "business": {
    "establishments": 1194,
    "employees": 9947,
    "annual_payroll_thousands": 511873
  },
  "tax": {
    "irs_returns": 20610,
    "irs_agi_thousands": 3690260
  },
  "area": {
    "land_sqmi": 37.001,
    "water_sqmi": 0.168
  },
  "nearest_zips": [
    {
      "zip": "21041",
      "miles": 3.8,
      "city": "Ellicott City",
      "state": "MD"
    },
    {
      "zip": "21150",
      "miles": 3.8,
      "city": "Simpsonville",
      "state": "MD"
    },
    {
      "zip": "21794",
      "miles": 4.1,
      "city": "West Friendship",
      "state": "MD"
    },
    {
      "zip": "21163",
      "miles": 4.9,
      "city": "Woodstock",
      "state": "MD"
    },
    {
      "zip": "21104",
      "miles": 4.9,
      "city": "Marriottsville",
      "state": "MD"
    },
    {
      "zip": "21044",
      "miles": 5,
      "city": "Columbia",
      "state": "MD"
    },
    {
      "zip": "21043",
      "miles": 5.2,
      "city": "Ellicott City",
      "state": "MD"
    },
    {
      "zip": "21029",
      "miles": 5.6,
      "city": "Clarksville",
      "state": "MD"
    },
    {
      "zip": "21045",
      "miles": 6.1,
      "city": "Columbia",
      "state": "MD"
    },
    {
      "zip": "21036",
      "miles": 6.7,
      "city": "Dayton",
      "state": "MD"
    }
  ],
  "release": "2026-10-12",
  "attribution": {
    "source": "zipcodes.pro",
    "url": "https://zipcodes.pro/zip/21042",
    "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."
  }
}