{
  "zip": "21001",
  "type": "standard",
  "type_source": "inferred",
  "city": "Aberdeen",
  "other_place_names": [
    "Perryman",
    "Riverside"
  ],
  "state": "MD",
  "state_name": "Maryland",
  "county": {
    "fips": "24025",
    "name": "Harford County",
    "short_name": "Harford"
  },
  "counties": [
    {
      "county_fips": "24025",
      "name": "Harford County",
      "short_name": "Harford",
      "weight": 1,
      "basis": "land_area"
    }
  ],
  "location": {
    "lat": 39.504488,
    "lng": -76.201049,
    "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": 27168,
    "households": 11204,
    "housing_units": 11610,
    "median_age": 37.7,
    "median_household_income": 83238,
    "median_home_value": 285800,
    "median_rent": 1442,
    "pct_bachelors_plus": 28.2,
    "mean_commute_min": 29.1,
    "density_per_sqmi": 906.8
  },
  "business": {
    "establishments": 551,
    "employees": 11492,
    "annual_payroll_thousands": 637426
  },
  "tax": {
    "irs_returns": 13270,
    "irs_agi_thousands": 899576
  },
  "area": {
    "land_sqmi": 29.96,
    "water_sqmi": 1.482
  },
  "nearest_zips": [
    {
      "zip": "21130",
      "miles": 2.1,
      "city": "Perryman",
      "state": "MD"
    },
    {
      "zip": "21017",
      "miles": 2.7,
      "city": "Belcamp",
      "state": "MD"
    },
    {
      "zip": "21078",
      "miles": 4.9,
      "city": "Havre De Grace",
      "state": "MD"
    },
    {
      "zip": "21028",
      "miles": 5,
      "city": "Churchville",
      "state": "MD"
    },
    {
      "zip": "21009",
      "miles": 5,
      "city": "Abingdon",
      "state": "MD"
    },
    {
      "zip": "21005",
      "miles": 5.3,
      "city": "Aberdeen Proving Ground",
      "state": "MD"
    },
    {
      "zip": "21015",
      "miles": 5.6,
      "city": "Bel Air",
      "state": "MD"
    },
    {
      "zip": "21040",
      "miles": 6.8,
      "city": "Edgewood",
      "state": "MD"
    },
    {
      "zip": "21902",
      "miles": 8,
      "city": "Perry Point",
      "state": "MD"
    },
    {
      "zip": "21014",
      "miles": 8.3,
      "city": "Bel Air",
      "state": "MD"
    }
  ],
  "release": "2026-10-12",
  "attribution": {
    "source": "zipcodes.pro",
    "url": "https://zipcodes.pro/zip/21001",
    "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."
  }
}