{
  "zip": "54937",
  "type": "standard",
  "type_source": "inferred",
  "city": "Fond Du Lac",
  "other_place_names": [
    "North Fond du Lac",
    "St. Peter",
    "Taycheedah"
  ],
  "state": "WI",
  "state_name": "Wisconsin",
  "county": {
    "fips": "55039",
    "name": "Fond du Lac County",
    "short_name": "Fond du Lac"
  },
  "counties": [
    {
      "county_fips": "55039",
      "name": "Fond du Lac County",
      "short_name": "Fond du Lac",
      "weight": 1,
      "basis": "land_area"
    }
  ],
  "location": {
    "lat": 43.724107,
    "lng": -88.398163,
    "source": "gazetteer_internal_point",
    "timezone": "America/Chicago"
  },
  "is_zcta": true,
  "parent_zcta": null,
  "metro": {
    "cbsa_code": "22540",
    "name": "Fond du Lac, WI",
    "type": "metro",
    "csa_code": null,
    "csa_name": null
  },
  "demographics": {
    "population": 21687,
    "households": 8887,
    "housing_units": 9284,
    "median_age": 46.5,
    "median_household_income": 81841,
    "median_home_value": 272200,
    "median_rent": 1132,
    "pct_bachelors_plus": 23.1,
    "mean_commute_min": 21.5,
    "density_per_sqmi": 180.6
  },
  "business": {
    "establishments": 399,
    "employees": 7972,
    "annual_payroll_thousands": 414917
  },
  "tax": {
    "irs_returns": 10710,
    "irs_agi_thousands": 1096091
  },
  "area": {
    "land_sqmi": 120.114,
    "water_sqmi": 0.884
  },
  "nearest_zips": [
    {
      "zip": "54935",
      "miles": 3.9,
      "city": "Fond Du Lac",
      "state": "WI"
    },
    {
      "zip": "54936",
      "miles": 4.1,
      "city": "Fond Du Lac",
      "state": "WI"
    },
    {
      "zip": "53019",
      "miles": 5.1,
      "city": "Eden",
      "state": "WI"
    },
    {
      "zip": "53065",
      "miles": 9.2,
      "city": "Oakfield",
      "state": "WI"
    },
    {
      "zip": "53057",
      "miles": 9.4,
      "city": "Mount Calvary",
      "state": "WI"
    },
    {
      "zip": "53006",
      "miles": 9.9,
      "city": "Brownsville",
      "state": "WI"
    },
    {
      "zip": "53010",
      "miles": 10,
      "city": "Campbellsport",
      "state": "WI"
    },
    {
      "zip": "53048",
      "miles": 10.8,
      "city": "Lomira",
      "state": "WI"
    },
    {
      "zip": "53079",
      "miles": 11.7,
      "city": "Saint Cloud",
      "state": "WI"
    },
    {
      "zip": "54979",
      "miles": 12.4,
      "city": "Van Dyne",
      "state": "WI"
    }
  ],
  "release": "2026-10-12",
  "attribution": {
    "source": "zipcodes.pro",
    "url": "https://zipcodes.pro/zip/54937",
    "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."
  }
}