{
  "zip": "21755",
  "type": "standard",
  "type_source": "inferred",
  "city": "Jefferson",
  "other_place_names": [
    "Burkittsville",
    "Braddock Heights"
  ],
  "state": "MD",
  "state_name": "Maryland",
  "county": {
    "fips": "24021",
    "name": "Frederick County",
    "short_name": "Frederick"
  },
  "counties": [
    {
      "county_fips": "24021",
      "name": "Frederick County",
      "short_name": "Frederick",
      "weight": 1,
      "basis": "land_area"
    }
  ],
  "location": {
    "lat": 39.359655,
    "lng": -77.568128,
    "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": 5909,
    "households": 2136,
    "housing_units": 2231,
    "median_age": 43.2,
    "median_household_income": 137417,
    "median_home_value": 529600,
    "median_rent": 1265,
    "pct_bachelors_plus": 46.8,
    "mean_commute_min": 31.4,
    "density_per_sqmi": 172.2
  },
  "business": {
    "establishments": 112,
    "employees": 674,
    "annual_payroll_thousands": 33075
  },
  "tax": {
    "irs_returns": 2970,
    "irs_agi_thousands": 323218
  },
  "area": {
    "land_sqmi": 34.321,
    "water_sqmi": 0.62
  },
  "nearest_zips": [
    {
      "zip": "21718",
      "miles": 4,
      "city": "Burkittsville",
      "state": "MD"
    },
    {
      "zip": "21716",
      "miles": 4.3,
      "city": "Brunswick",
      "state": "MD"
    },
    {
      "zip": "21714",
      "miles": 4.7,
      "city": "Braddock Heights",
      "state": "MD"
    },
    {
      "zip": "21758",
      "miles": 4.8,
      "city": "Knoxville",
      "state": "MD"
    },
    {
      "zip": "21703",
      "miles": 5.1,
      "city": "Frederick",
      "state": "MD"
    },
    {
      "zip": "21715",
      "miles": 5.1,
      "city": "Brownsville",
      "state": "MD"
    },
    {
      "zip": "21769",
      "miles": 5.7,
      "city": "Middletown",
      "state": "MD"
    },
    {
      "zip": "21777",
      "miles": 5.9,
      "city": "Point Of Rocks",
      "state": "MD"
    },
    {
      "zip": "21779",
      "miles": 6.4,
      "city": "Rohrersville",
      "state": "MD"
    },
    {
      "zip": "20180",
      "miles": 7.3,
      "city": "Lovettsville",
      "state": "VA"
    }
  ],
  "release": "2026-10-12",
  "attribution": {
    "source": "zipcodes.pro",
    "url": "https://zipcodes.pro/zip/21755",
    "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."
  }
}