{
  "zip": "57038",
  "type": "standard",
  "type_source": "inferred",
  "city": "Jefferson",
  "other_place_names": [],
  "state": "SD",
  "state_name": "South Dakota",
  "county": {
    "fips": "46127",
    "name": "Union County",
    "short_name": "Union"
  },
  "counties": [
    {
      "county_fips": "46127",
      "name": "Union County",
      "short_name": "Union",
      "weight": 1,
      "basis": "land_area"
    }
  ],
  "location": {
    "lat": 42.577928,
    "lng": -96.576599,
    "source": "gazetteer_internal_point",
    "timezone": "America/Chicago"
  },
  "is_zcta": true,
  "parent_zcta": null,
  "metro": {
    "cbsa_code": "43580",
    "name": "Sioux City, IA-NE-SD",
    "type": "metro",
    "csa_code": "512",
    "csa_name": "Sioux City-Le Mars, IA-NE-SD"
  },
  "demographics": {
    "population": 1796,
    "households": 736,
    "housing_units": 747,
    "median_age": 43.2,
    "median_household_income": 106250,
    "median_home_value": 332300,
    "median_rent": 913,
    "pct_bachelors_plus": 40.1,
    "mean_commute_min": 20.6,
    "density_per_sqmi": 35.5
  },
  "business": {
    "establishments": 24,
    "employees": 177,
    "annual_payroll_thousands": 10598
  },
  "tax": {
    "irs_returns": 820,
    "irs_agi_thousands": 255450
  },
  "area": {
    "land_sqmi": 50.584,
    "water_sqmi": 2.531
  },
  "nearest_zips": [
    {
      "zip": "57049",
      "miles": 5.1,
      "city": "North Sioux City",
      "state": "SD"
    },
    {
      "zip": "51109",
      "miles": 5.9,
      "city": "Sioux City",
      "state": "IA"
    },
    {
      "zip": "51103",
      "miles": 7.6,
      "city": "Sioux City",
      "state": "IA"
    },
    {
      "zip": "68743",
      "miles": 7.7,
      "city": "Jackson",
      "state": "NE"
    },
    {
      "zip": "51062",
      "miles": 8.6,
      "city": "Westfield",
      "state": "IA"
    },
    {
      "zip": "51104",
      "miles": 9.3,
      "city": "Sioux City",
      "state": "IA"
    },
    {
      "zip": "68770",
      "miles": 9.6,
      "city": "Ponca",
      "state": "NE"
    },
    {
      "zip": "68776",
      "miles": 10.6,
      "city": "South Sioux City",
      "state": "NE"
    },
    {
      "zip": "51101",
      "miles": 11,
      "city": "Sioux City",
      "state": "IA"
    },
    {
      "zip": "57025",
      "miles": 11.2,
      "city": "Elk Point",
      "state": "SD"
    }
  ],
  "release": "2026-10-12",
  "attribution": {
    "source": "zipcodes.pro",
    "url": "https://zipcodes.pro/zip/57038",
    "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."
  }
}