{
  "zip": "57042",
  "type": "standard",
  "type_source": "inferred",
  "city": "Madison",
  "other_place_names": [
    "Rustic Acres Colony",
    "Lake Madison"
  ],
  "state": "SD",
  "state_name": "South Dakota",
  "county": {
    "fips": "46079",
    "name": "Lake County",
    "short_name": "Lake"
  },
  "counties": [
    {
      "county_fips": "46079",
      "name": "Lake County",
      "short_name": "Lake",
      "weight": 0.992,
      "basis": "land_area"
    },
    {
      "county_fips": "46087",
      "name": "McCook County",
      "short_name": "McCook",
      "weight": 0.008,
      "basis": "land_area"
    }
  ],
  "location": {
    "lat": 43.971319,
    "lng": -97.144098,
    "source": "gazetteer_internal_point",
    "timezone": "America/Chicago"
  },
  "is_zcta": true,
  "parent_zcta": null,
  "metro": null,
  "demographics": {
    "population": 7756,
    "households": 3331,
    "housing_units": 3800,
    "median_age": 43.1,
    "median_household_income": 71868,
    "median_home_value": 228200,
    "median_rent": 963,
    "pct_bachelors_plus": 36.6,
    "mean_commute_min": 12.6,
    "density_per_sqmi": 40.1
  },
  "business": {
    "establishments": 272,
    "employees": 3517,
    "annual_payroll_thousands": 182885
  },
  "tax": {
    "irs_returns": 3990,
    "irs_agi_thousands": 314727
  },
  "area": {
    "land_sqmi": 193.218,
    "water_sqmi": 3.714
  },
  "nearest_zips": [
    {
      "zip": "57075",
      "miles": 9,
      "city": "Wentworth",
      "state": "SD"
    },
    {
      "zip": "57076",
      "miles": 10.7,
      "city": "Winfred",
      "state": "SD"
    },
    {
      "zip": "57016",
      "miles": 11.3,
      "city": "Chester",
      "state": "SD"
    },
    {
      "zip": "57054",
      "miles": 11.6,
      "city": "Ramona",
      "state": "SD"
    },
    {
      "zip": "57057",
      "miles": 12.9,
      "city": "Rutland",
      "state": "SD"
    },
    {
      "zip": "57050",
      "miles": 14.2,
      "city": "Nunda",
      "state": "SD"
    },
    {
      "zip": "57018",
      "miles": 14.5,
      "city": "Colton",
      "state": "SD"
    },
    {
      "zip": "57048",
      "miles": 16.1,
      "city": "Montrose",
      "state": "SD"
    },
    {
      "zip": "57017",
      "miles": 16.7,
      "city": "Colman",
      "state": "SD"
    },
    {
      "zip": "57061",
      "miles": 19.5,
      "city": "Sinai",
      "state": "SD"
    }
  ],
  "release": "2026-10-12",
  "attribution": {
    "source": "zipcodes.pro",
    "url": "https://zipcodes.pro/zip/57042",
    "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."
  }
}