{
  "zip": "58521",
  "type": "standard",
  "type_source": "inferred",
  "city": "Baldwin",
  "other_place_names": [],
  "state": "ND",
  "state_name": "North Dakota",
  "county": {
    "fips": "38015",
    "name": "Burleigh County",
    "short_name": "Burleigh"
  },
  "counties": [
    {
      "county_fips": "38015",
      "name": "Burleigh County",
      "short_name": "Burleigh",
      "weight": 1,
      "basis": "land_area"
    }
  ],
  "location": {
    "lat": 47.027958,
    "lng": -100.673956,
    "source": "gazetteer_internal_point",
    "timezone": "America/Chicago"
  },
  "is_zcta": true,
  "parent_zcta": null,
  "metro": {
    "cbsa_code": "13900",
    "name": "Bismarck, ND",
    "type": "metro",
    "csa_code": null,
    "csa_name": null
  },
  "demographics": {
    "population": 722,
    "households": 307,
    "housing_units": 337,
    "median_age": 52.8,
    "median_household_income": 135456,
    "median_home_value": 398800,
    "median_rent": null,
    "pct_bachelors_plus": 45.1,
    "mean_commute_min": 34,
    "density_per_sqmi": 4.3
  },
  "business": {
    "establishments": 14,
    "employees": 92,
    "annual_payroll_thousands": 6930
  },
  "tax": {
    "irs_returns": 320,
    "irs_agi_thousands": 32120
  },
  "area": {
    "land_sqmi": 166.02,
    "water_sqmi": 1.155
  },
  "nearest_zips": [
    {
      "zip": "58503",
      "miles": 9.2,
      "city": "Bismarck",
      "state": "ND"
    },
    {
      "zip": "58502",
      "miles": 9.6,
      "city": "Bismarck",
      "state": "ND"
    },
    {
      "zip": "58579",
      "miles": 10.9,
      "city": "Wilton",
      "state": "ND"
    },
    {
      "zip": "58501",
      "miles": 14.8,
      "city": "Bismarck",
      "state": "ND"
    },
    {
      "zip": "58477",
      "miles": 15.2,
      "city": "Regan",
      "state": "ND"
    },
    {
      "zip": "58505",
      "miles": 15.2,
      "city": "Bismarck",
      "state": "ND"
    },
    {
      "zip": "58558",
      "miles": 16,
      "city": "Menoken",
      "state": "ND"
    },
    {
      "zip": "58506",
      "miles": 16,
      "city": "Bismarck",
      "state": "ND"
    },
    {
      "zip": "58507",
      "miles": 16,
      "city": "Bismarck",
      "state": "ND"
    },
    {
      "zip": "58572",
      "miles": 19.2,
      "city": "Sterling",
      "state": "ND"
    }
  ],
  "release": "2026-10-12",
  "attribution": {
    "source": "zipcodes.pro",
    "url": "https://zipcodes.pro/zip/58521",
    "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."
  }
}