{
  "zip": "03237",
  "type": "standard",
  "type_source": "inferred",
  "city": "Gilmanton",
  "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": 43.431581,
    "lng": -71.387657,
    "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": 2575,
    "households": 1097,
    "housing_units": 1390,
    "median_age": 43.2,
    "median_household_income": 111359,
    "median_home_value": 345400,
    "median_rent": null,
    "pct_bachelors_plus": 36.1,
    "mean_commute_min": 33,
    "density_per_sqmi": 67.8
  },
  "business": {
    "establishments": 40,
    "employees": 117,
    "annual_payroll_thousands": 7377
  },
  "tax": {
    "irs_returns": 1390,
    "irs_agi_thousands": 125410
  },
  "area": {
    "land_sqmi": 37.963,
    "water_sqmi": 1.037
  },
  "nearest_zips": [
    {
      "zip": "03837",
      "miles": 2.7,
      "city": "Gilmanton Iron Works",
      "state": "NH"
    },
    {
      "zip": "03220",
      "miles": 5.6,
      "city": "Belmont",
      "state": "NH"
    },
    {
      "zip": "03249",
      "miles": 6.1,
      "city": "Gilford",
      "state": "NH"
    },
    {
      "zip": "03298",
      "miles": 7.1,
      "city": "Tilton",
      "state": "NH"
    },
    {
      "zip": "03299",
      "miles": 7.1,
      "city": "Tilton",
      "state": "NH"
    },
    {
      "zip": "03810",
      "miles": 7.3,
      "city": "Alton Bay",
      "state": "NH"
    },
    {
      "zip": "03307",
      "miles": 7.4,
      "city": "Loudon",
      "state": "NH"
    },
    {
      "zip": "03252",
      "miles": 7.9,
      "city": "Lochmere",
      "state": "NH"
    },
    {
      "zip": "03289",
      "miles": 8,
      "city": "Winnisquam",
      "state": "NH"
    },
    {
      "zip": "03218",
      "miles": 8.7,
      "city": "Barnstead",
      "state": "NH"
    }
  ],
  "release": "2026-10-12",
  "attribution": {
    "source": "zipcodes.pro",
    "url": "https://zipcodes.pro/zip/03237",
    "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."
  }
}