{
  "zip": "53137",
  "type": "standard",
  "type_source": "inferred",
  "city": "Helenville",
  "other_place_names": [
    "Rome"
  ],
  "state": "WI",
  "state_name": "Wisconsin",
  "county": {
    "fips": "55055",
    "name": "Jefferson County",
    "short_name": "Jefferson"
  },
  "counties": [
    {
      "county_fips": "55055",
      "name": "Jefferson County",
      "short_name": "Jefferson",
      "weight": 1,
      "basis": "land_area"
    }
  ],
  "location": {
    "lat": 43.007883,
    "lng": -88.669078,
    "source": "gazetteer_internal_point",
    "timezone": "America/Chicago"
  },
  "is_zcta": true,
  "parent_zcta": null,
  "metro": {
    "cbsa_code": "48020",
    "name": "Watertown-Fort Atkinson, WI",
    "type": "micro",
    "csa_code": "376",
    "csa_name": "Milwaukee-Racine-Waukesha, WI"
  },
  "demographics": {
    "population": 1650,
    "households": 651,
    "housing_units": 669,
    "median_age": 49.4,
    "median_household_income": 116550,
    "median_home_value": 366200,
    "median_rent": null,
    "pct_bachelors_plus": 28.5,
    "mean_commute_min": 33.2,
    "density_per_sqmi": 49.7
  },
  "business": {
    "establishments": 37,
    "employees": 141,
    "annual_payroll_thousands": 5654
  },
  "tax": {
    "irs_returns": 880,
    "irs_agi_thousands": 78198
  },
  "area": {
    "land_sqmi": 33.201,
    "water_sqmi": 0.014
  },
  "nearest_zips": [
    {
      "zip": "53178",
      "miles": 3.9,
      "city": "Sullivan",
      "state": "WI"
    },
    {
      "zip": "53549",
      "miles": 5.1,
      "city": "Jefferson",
      "state": "WI"
    },
    {
      "zip": "53038",
      "miles": 8.1,
      "city": "Johnson Creek",
      "state": "WI"
    },
    {
      "zip": "53156",
      "miles": 9.1,
      "city": "Palmyra",
      "state": "WI"
    },
    {
      "zip": "53118",
      "miles": 9.5,
      "city": "Dousman",
      "state": "WI"
    },
    {
      "zip": "53094",
      "miles": 9.9,
      "city": "Watertown",
      "state": "WI"
    },
    {
      "zip": "53066",
      "miles": 11.7,
      "city": "Oconomowoc",
      "state": "WI"
    },
    {
      "zip": "53119",
      "miles": 12.2,
      "city": "Eagle",
      "state": "WI"
    },
    {
      "zip": "53538",
      "miles": 12.3,
      "city": "Fort Atkinson",
      "state": "WI"
    },
    {
      "zip": "53036",
      "miles": 12.8,
      "city": "Ixonia",
      "state": "WI"
    }
  ],
  "release": "2026-10-12",
  "attribution": {
    "source": "zipcodes.pro",
    "url": "https://zipcodes.pro/zip/53137",
    "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."
  }
}