{
  "zip": "20166",
  "type": "standard",
  "type_source": "inferred",
  "city": "Sterling",
  "other_place_names": [
    "Dulles Town Center",
    "Ashburn",
    "Arcola",
    "Oak Grove",
    "Loudoun Valley Estates",
    "Kincora",
    "Herndon"
  ],
  "state": "VA",
  "state_name": "Virginia",
  "county": {
    "fips": "51107",
    "name": "Loudoun County",
    "short_name": "Loudoun"
  },
  "counties": [
    {
      "county_fips": "51107",
      "name": "Loudoun County",
      "short_name": "Loudoun",
      "weight": 1,
      "basis": "land_area"
    }
  ],
  "location": {
    "lat": 38.970032,
    "lng": -77.464002,
    "source": "gazetteer_internal_point",
    "timezone": "America/New_York"
  },
  "is_zcta": true,
  "parent_zcta": null,
  "metro": {
    "cbsa_code": "47900",
    "name": "Washington-Arlington-Alexandria, DC-VA-MD-WV",
    "type": "metro",
    "csa_code": "548",
    "csa_name": "Washington-Baltimore-Arlington, DC-MD-VA-WV-PA"
  },
  "demographics": {
    "population": 14949,
    "households": 5473,
    "housing_units": 5552,
    "median_age": 34,
    "median_household_income": 133401,
    "median_home_value": 618800,
    "median_rent": 2362,
    "pct_bachelors_plus": 65.3,
    "mean_commute_min": 27.9,
    "density_per_sqmi": 549.8
  },
  "business": {
    "establishments": 1902,
    "employees": 67063,
    "annual_payroll_thousands": 5263414
  },
  "tax": {
    "irs_returns": 8060,
    "irs_agi_thousands": 786868
  },
  "area": {
    "land_sqmi": 27.188,
    "water_sqmi": 0.34
  },
  "nearest_zips": [
    {
      "zip": "20598",
      "miles": 1.7,
      "city": "Dhs",
      "state": "VA"
    },
    {
      "zip": "20103",
      "miles": 2,
      "city": "Dulles",
      "state": "VA"
    },
    {
      "zip": "20101",
      "miles": 2.5,
      "city": "Dulles",
      "state": "VA"
    },
    {
      "zip": "20189",
      "miles": 2.9,
      "city": "Dulles",
      "state": "VA"
    },
    {
      "zip": "20163",
      "miles": 3.1,
      "city": "Sterling",
      "state": "VA"
    },
    {
      "zip": "20167",
      "miles": 3.1,
      "city": "Sterling",
      "state": "VA"
    },
    {
      "zip": "20148",
      "miles": 4,
      "city": "Ashburn",
      "state": "VA"
    },
    {
      "zip": "20172",
      "miles": 4.2,
      "city": "Herndon",
      "state": "VA"
    },
    {
      "zip": "22095",
      "miles": 4.2,
      "city": "Herndon",
      "state": "VA"
    },
    {
      "zip": "20170",
      "miles": 4.6,
      "city": "Herndon",
      "state": "VA"
    }
  ],
  "release": "2026-10-12",
  "attribution": {
    "source": "zipcodes.pro",
    "url": "https://zipcodes.pro/zip/20166",
    "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."
  }
}