{
  "zip": "83428",
  "type": "standard",
  "type_source": "inferred",
  "city": "Irwin",
  "other_place_names": [
    "Swan Valley"
  ],
  "state": "ID",
  "state_name": "Idaho",
  "county": {
    "fips": "16019",
    "name": "Bonneville County",
    "short_name": "Bonneville"
  },
  "counties": [
    {
      "county_fips": "16019",
      "name": "Bonneville County",
      "short_name": "Bonneville",
      "weight": 1,
      "basis": "land_area"
    }
  ],
  "location": {
    "lat": 43.392674,
    "lng": -111.12005,
    "source": "gazetteer_internal_point",
    "timezone": "America/Boise"
  },
  "is_zcta": true,
  "parent_zcta": null,
  "metro": {
    "cbsa_code": "26820",
    "name": "Idaho Falls, ID",
    "type": "metro",
    "csa_code": "292",
    "csa_name": "Idaho Falls-Rexburg-Blackfoot, ID"
  },
  "demographics": {
    "population": 576,
    "households": 241,
    "housing_units": 524,
    "median_age": 56.2,
    "median_household_income": 68750,
    "median_home_value": 574400,
    "median_rent": null,
    "pct_bachelors_plus": 31.7,
    "mean_commute_min": 41.7,
    "density_per_sqmi": 2.3
  },
  "business": {
    "establishments": 10,
    "employees": 50,
    "annual_payroll_thousands": 2971
  },
  "tax": {
    "irs_returns": 220,
    "irs_agi_thousands": 25303
  },
  "area": {
    "land_sqmi": 248.967,
    "water_sqmi": 23.937
  },
  "nearest_zips": [
    {
      "zip": "83014",
      "miles": 8.6,
      "city": "Wilson",
      "state": "WY"
    },
    {
      "zip": "83449",
      "miles": 12.1,
      "city": "Swan Valley",
      "state": "ID"
    },
    {
      "zip": "83455",
      "miles": 14.7,
      "city": "Victor",
      "state": "ID"
    },
    {
      "zip": "83002",
      "miles": 18.9,
      "city": "Jackson",
      "state": "WY"
    },
    {
      "zip": "83025",
      "miles": 19.5,
      "city": "Teton Village",
      "state": "WY"
    },
    {
      "zip": "83120",
      "miles": 19.6,
      "city": "Freedom",
      "state": "WY"
    },
    {
      "zip": "83422",
      "miles": 22.4,
      "city": "Driggs",
      "state": "ID"
    },
    {
      "zip": "83443",
      "miles": 23.4,
      "city": "Ririe",
      "state": "ID"
    },
    {
      "zip": "83285",
      "miles": 24,
      "city": "Wayan",
      "state": "ID"
    },
    {
      "zip": "83001",
      "miles": 24.6,
      "city": "Jackson",
      "state": "WY"
    }
  ],
  "release": "2026-10-12",
  "attribution": {
    "source": "zipcodes.pro",
    "url": "https://zipcodes.pro/zip/83428",
    "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."
  }
}