{
  "zip": "03837",
  "type": "standard",
  "type_source": "inferred",
  "city": "Gilmanton Iron Works",
  "other_place_names": [],
  "state": "NH",
  "state_name": "New Hampshire",
  "county": {
    "fips": "33001",
    "name": "Belknap County",
    "short_name": "Belknap"
  },
  "counties": [
    {
      "county_fips": "33001",
      "name": "Belknap County",
      "short_name": "Belknap",
      "weight": 1,
      "basis": "land_area"
    }
  ],
  "location": {
    "lat": 43.422251,
    "lng": -71.336087,
    "source": "gazetteer_internal_point",
    "timezone": "America/New_York"
  },
  "is_zcta": true,
  "parent_zcta": null,
  "metro": {
    "cbsa_code": "29060",
    "name": "Laconia, NH",
    "type": "micro",
    "csa_code": "148",
    "csa_name": "Boston-Worcester-Providence, MA-RI-NH"
  },
  "demographics": {
    "population": 1451,
    "households": 602,
    "housing_units": 956,
    "median_age": 55.1,
    "median_household_income": 119712,
    "median_home_value": 409600,
    "median_rent": null,
    "pct_bachelors_plus": 41.1,
    "mean_commute_min": 32.8,
    "density_per_sqmi": 72.7
  },
  "business": {
    "establishments": 24,
    "employees": 71,
    "annual_payroll_thousands": 3553
  },
  "tax": {
    "irs_returns": 740,
    "irs_agi_thousands": 64302
  },
  "area": {
    "land_sqmi": 19.97,
    "water_sqmi": 0.674
  },
  "nearest_zips": [
    {
      "zip": "03237",
      "miles": 2.7,
      "city": "Gilmanton",
      "state": "NH"
    },
    {
      "zip": "03225",
      "miles": 6.2,
      "city": "Center Barnstead",
      "state": "NH"
    },
    {
      "zip": "03810",
      "miles": 6.6,
      "city": "Alton Bay",
      "state": "NH"
    },
    {
      "zip": "03218",
      "miles": 6.7,
      "city": "Barnstead",
      "state": "NH"
    },
    {
      "zip": "03249",
      "miles": 7,
      "city": "Gilford",
      "state": "NH"
    },
    {
      "zip": "03809",
      "miles": 7.4,
      "city": "Alton",
      "state": "NH"
    },
    {
      "zip": "03220",
      "miles": 8.2,
      "city": "Belmont",
      "state": "NH"
    },
    {
      "zip": "03307",
      "miles": 8.2,
      "city": "Loudon",
      "state": "NH"
    },
    {
      "zip": "03298",
      "miles": 9,
      "city": "Tilton",
      "state": "NH"
    },
    {
      "zip": "03299",
      "miles": 9,
      "city": "Tilton",
      "state": "NH"
    }
  ],
  "release": "2026-10-12",
  "attribution": {
    "source": "zipcodes.pro",
    "url": "https://zipcodes.pro/zip/03837",
    "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."
  }
}