{
  "zip": "21155",
  "type": "standard",
  "type_source": "inferred",
  "city": "Upperco",
  "other_place_names": [],
  "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": 0.8909,
      "basis": "land_area"
    },
    {
      "county_fips": "24013",
      "name": "Carroll County",
      "short_name": "Carroll",
      "weight": 0.1091,
      "basis": "land_area"
    }
  ],
  "location": {
    "lat": 39.573619,
    "lng": -76.806079,
    "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": 3313,
    "households": 1032,
    "housing_units": 1229,
    "median_age": 33.7,
    "median_household_income": 123158,
    "median_home_value": 479500,
    "median_rent": 1513,
    "pct_bachelors_plus": 43.5,
    "mean_commute_min": 30.6,
    "density_per_sqmi": 149.7
  },
  "business": {
    "establishments": 66,
    "employees": 379,
    "annual_payroll_thousands": 16147
  },
  "tax": {
    "irs_returns": 1300,
    "irs_agi_thousands": 176413
  },
  "area": {
    "land_sqmi": 22.125,
    "water_sqmi": 0.06
  },
  "nearest_zips": [
    {
      "zip": "21020",
      "miles": 3.6,
      "city": "Boring",
      "state": "MD"
    },
    {
      "zip": "21074",
      "miles": 3.8,
      "city": "Hampstead",
      "state": "MD"
    },
    {
      "zip": "21023",
      "miles": 4.9,
      "city": "Butler",
      "state": "MD"
    },
    {
      "zip": "21071",
      "miles": 6.2,
      "city": "Glyndon",
      "state": "MD"
    },
    {
      "zip": "21152",
      "miles": 6.5,
      "city": "Sparks Glencoe",
      "state": "MD"
    },
    {
      "zip": "21030",
      "miles": 7,
      "city": "Cockeysville",
      "state": "MD"
    },
    {
      "zip": "21048",
      "miles": 8.1,
      "city": "Finksburg",
      "state": "MD"
    },
    {
      "zip": "21102",
      "miles": 8.5,
      "city": "Manchester",
      "state": "MD"
    },
    {
      "zip": "21120",
      "miles": 8.6,
      "city": "Parkton",
      "state": "MD"
    },
    {
      "zip": "21136",
      "miles": 9.5,
      "city": "Reisterstown",
      "state": "MD"
    }
  ],
  "release": "2026-10-12",
  "attribution": {
    "source": "zipcodes.pro",
    "url": "https://zipcodes.pro/zip/21155",
    "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."
  }
}