{
  "zip": "40121",
  "type": "standard",
  "type_source": "inferred",
  "city": "Fort Knox",
  "other_place_names": [
    "Radcliff",
    "Muldraugh"
  ],
  "state": "KY",
  "state_name": "Kentucky",
  "county": {
    "fips": "21093",
    "name": "Hardin County",
    "short_name": "Hardin"
  },
  "counties": [
    {
      "county_fips": "21093",
      "name": "Hardin County",
      "short_name": "Hardin",
      "weight": 0.8412,
      "basis": "land_area"
    },
    {
      "county_fips": "21163",
      "name": "Meade County",
      "short_name": "Meade",
      "weight": 0.1588,
      "basis": "land_area"
    }
  ],
  "location": {
    "lat": 37.926895,
    "lng": -85.95981,
    "source": "gazetteer_internal_point",
    "timezone": "America/New_York"
  },
  "is_zcta": true,
  "parent_zcta": null,
  "metro": {
    "cbsa_code": "21060",
    "name": "Elizabethtown, KY",
    "type": "metro",
    "csa_code": "350",
    "csa_name": "Louisville/Jefferson County--Elizabethtown, KY-IN"
  },
  "demographics": {
    "population": 8836,
    "households": 2226,
    "housing_units": 2497,
    "median_age": 24,
    "median_household_income": 82663,
    "median_home_value": null,
    "median_rent": 1502,
    "pct_bachelors_plus": 48.3,
    "mean_commute_min": 12.4,
    "density_per_sqmi": 250.9
  },
  "business": {
    "establishments": 55,
    "employees": 1015,
    "annual_payroll_thousands": 55488
  },
  "tax": {
    "irs_returns": 2480,
    "irs_agi_thousands": 167562
  },
  "area": {
    "land_sqmi": 35.221,
    "water_sqmi": 0.075
  },
  "nearest_zips": [
    {
      "zip": "40155",
      "miles": 2.4,
      "city": "Muldraugh",
      "state": "KY"
    },
    {
      "zip": "40122",
      "miles": 2.5,
      "city": "Fort Knox",
      "state": "KY"
    },
    {
      "zip": "40177",
      "miles": 5.6,
      "city": "West Point",
      "state": "KY"
    },
    {
      "zip": "40160",
      "miles": 8,
      "city": "Radcliff",
      "state": "KY"
    },
    {
      "zip": "40117",
      "miles": 9.2,
      "city": "Ekron",
      "state": "KY"
    },
    {
      "zip": "40175",
      "miles": 10.3,
      "city": "Vine Grove",
      "state": "KY"
    },
    {
      "zip": "47135",
      "miles": 10.5,
      "city": "Laconia",
      "state": "IN"
    },
    {
      "zip": "40272",
      "miles": 12,
      "city": "Louisville",
      "state": "KY"
    },
    {
      "zip": "40108",
      "miles": 12,
      "city": "Brandenburg",
      "state": "KY"
    },
    {
      "zip": "47117",
      "miles": 12.4,
      "city": "Elizabeth",
      "state": "IN"
    }
  ],
  "release": "2026-10-12",
  "attribution": {
    "source": "zipcodes.pro",
    "url": "https://zipcodes.pro/zip/40121",
    "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."
  }
}