{
  "zip": "21128",
  "type": "standard",
  "type_source": "inferred",
  "city": "Perry Hall",
  "other_place_names": [
    "Honeygo",
    "White Marsh"
  ],
  "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": 39.40467,
    "lng": -76.448223,
    "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": 15501,
    "households": 5609,
    "housing_units": 5917,
    "median_age": 40.1,
    "median_household_income": 128069,
    "median_home_value": 449500,
    "median_rent": 1935,
    "pct_bachelors_plus": 54.8,
    "mean_commute_min": 33.2,
    "density_per_sqmi": 2277.2
  },
  "business": {
    "establishments": 223,
    "employees": 2023,
    "annual_payroll_thousands": 82766
  },
  "tax": {
    "irs_returns": 7730,
    "irs_agi_thousands": 853813
  },
  "area": {
    "land_sqmi": 6.807,
    "water_sqmi": 0.005
  },
  "nearest_zips": [
    {
      "zip": "21236",
      "miles": 2.2,
      "city": "Nottingham",
      "state": "MD"
    },
    {
      "zip": "21162",
      "miles": 2.5,
      "city": "White Marsh",
      "state": "MD"
    },
    {
      "zip": "21156",
      "miles": 2.9,
      "city": "Upper Falls",
      "state": "MD"
    },
    {
      "zip": "21087",
      "miles": 3.6,
      "city": "Kingsville",
      "state": "MD"
    },
    {
      "zip": "21234",
      "miles": 4.5,
      "city": "Parkville",
      "state": "MD"
    },
    {
      "zip": "21057",
      "miles": 4.6,
      "city": "Glen Arm",
      "state": "MD"
    },
    {
      "zip": "21051",
      "miles": 4.7,
      "city": "Fork",
      "state": "MD"
    },
    {
      "zip": "21027",
      "miles": 5,
      "city": "Chase",
      "state": "MD"
    },
    {
      "zip": "21237",
      "miles": 5,
      "city": "Rosedale",
      "state": "MD"
    },
    {
      "zip": "21220",
      "miles": 5.2,
      "city": "Middle River",
      "state": "MD"
    }
  ],
  "release": "2026-10-12",
  "attribution": {
    "source": "zipcodes.pro",
    "url": "https://zipcodes.pro/zip/21128",
    "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."
  }
}