{
  "zip": "52133",
  "type": "standard",
  "type_source": "inferred",
  "city": "Castalia",
  "other_place_names": [],
  "state": "IA",
  "state_name": "Iowa",
  "county": {
    "fips": "19191",
    "name": "Winneshiek County",
    "short_name": "Winneshiek"
  },
  "counties": [
    {
      "county_fips": "19191",
      "name": "Winneshiek County",
      "short_name": "Winneshiek",
      "weight": 0.7024,
      "basis": "land_area"
    },
    {
      "county_fips": "19065",
      "name": "Fayette County",
      "short_name": "Fayette",
      "weight": 0.2976,
      "basis": "land_area"
    }
  ],
  "location": {
    "lat": 43.108906,
    "lng": -91.660578,
    "source": "gazetteer_internal_point",
    "timezone": "America/Chicago"
  },
  "is_zcta": true,
  "parent_zcta": null,
  "metro": null,
  "demographics": {
    "population": 673,
    "households": 245,
    "housing_units": 276,
    "median_age": 44.3,
    "median_household_income": 76250,
    "median_home_value": 246100,
    "median_rent": null,
    "pct_bachelors_plus": 11.3,
    "mean_commute_min": 20.4,
    "density_per_sqmi": 15.4
  },
  "business": {
    "establishments": 3,
    "employees": 3,
    "annual_payroll_thousands": 65
  },
  "tax": {
    "irs_returns": 220,
    "irs_agi_thousands": 13814
  },
  "area": {
    "land_sqmi": 43.674,
    "water_sqmi": 0.007
  },
  "nearest_zips": [
    {
      "zip": "52161",
      "miles": 5,
      "city": "Ossian",
      "state": "IA"
    },
    {
      "zip": "52162",
      "miles": 5.4,
      "city": "Postville",
      "state": "IA"
    },
    {
      "zip": "52135",
      "miles": 6.1,
      "city": "Clermont",
      "state": "IA"
    },
    {
      "zip": "52156",
      "miles": 10.6,
      "city": "Luana",
      "state": "IA"
    },
    {
      "zip": "52175",
      "miles": 11.5,
      "city": "West Union",
      "state": "IA"
    },
    {
      "zip": "52141",
      "miles": 12.3,
      "city": "Elgin",
      "state": "IA"
    },
    {
      "zip": "52166",
      "miles": 14.2,
      "city": "Saint Lucas",
      "state": "IA"
    },
    {
      "zip": "52172",
      "miles": 14.3,
      "city": "Waukon",
      "state": "IA"
    },
    {
      "zip": "52159",
      "miles": 15,
      "city": "Monona",
      "state": "IA"
    },
    {
      "zip": "52132",
      "miles": 15.2,
      "city": "Calmar",
      "state": "IA"
    }
  ],
  "release": "2026-10-12",
  "attribution": {
    "source": "zipcodes.pro",
    "url": "https://zipcodes.pro/zip/52133",
    "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."
  }
}