{
  "zip": "01879",
  "type": "standard",
  "type_source": "inferred",
  "city": "Tyngsboro",
  "other_place_names": [],
  "state": "MA",
  "state_name": "Massachusetts",
  "county": {
    "fips": "25017",
    "name": "Middlesex County",
    "short_name": "Middlesex"
  },
  "counties": [
    {
      "county_fips": "25017",
      "name": "Middlesex County",
      "short_name": "Middlesex",
      "weight": 1,
      "basis": "land_area"
    }
  ],
  "location": {
    "lat": 42.667762,
    "lng": -71.42882,
    "source": "gazetteer_internal_point",
    "timezone": "America/New_York"
  },
  "is_zcta": true,
  "parent_zcta": null,
  "metro": {
    "cbsa_code": "14460",
    "name": "Boston-Cambridge-Newton, MA-NH",
    "type": "metro",
    "csa_code": "148",
    "csa_name": "Boston-Worcester-Providence, MA-RI-NH"
  },
  "demographics": {
    "population": 12550,
    "households": 4232,
    "housing_units": 4335,
    "median_age": 39.4,
    "median_household_income": 129348,
    "median_home_value": 552500,
    "median_rent": 1986,
    "pct_bachelors_plus": 51.8,
    "mean_commute_min": 24.1,
    "density_per_sqmi": 748.8
  },
  "business": {
    "establishments": 334,
    "employees": 3772,
    "annual_payroll_thousands": 219358
  },
  "tax": {
    "irs_returns": 6740,
    "irs_agi_thousands": 709178
  },
  "area": {
    "land_sqmi": 16.761,
    "water_sqmi": 1.31
  },
  "nearest_zips": [
    {
      "zip": "01863",
      "miles": 3,
      "city": "North Chelmsford",
      "state": "MA"
    },
    {
      "zip": "01827",
      "miles": 3.7,
      "city": "Dunstable",
      "state": "MA"
    },
    {
      "zip": "01854",
      "miles": 4.3,
      "city": "Lowell",
      "state": "MA"
    },
    {
      "zip": "03062",
      "miles": 5.3,
      "city": "Nashua",
      "state": "NH"
    },
    {
      "zip": "03060",
      "miles": 5.3,
      "city": "Nashua",
      "state": "NH"
    },
    {
      "zip": "01851",
      "miles": 5.4,
      "city": "Lowell",
      "state": "MA"
    },
    {
      "zip": "01886",
      "miles": 5.7,
      "city": "Westford",
      "state": "MA"
    },
    {
      "zip": "01853",
      "miles": 6.2,
      "city": "Lowell",
      "state": "MA"
    },
    {
      "zip": "03076",
      "miles": 6.4,
      "city": "Pelham",
      "state": "NH"
    },
    {
      "zip": "01850",
      "miles": 6.4,
      "city": "Lowell",
      "state": "MA"
    }
  ],
  "release": "2026-10-12",
  "attribution": {
    "source": "zipcodes.pro",
    "url": "https://zipcodes.pro/zip/01879",
    "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."
  }
}