{
  "zip": "50138",
  "type": "standard",
  "type_source": "inferred",
  "city": "Knoxville",
  "other_place_names": [],
  "state": "IA",
  "state_name": "Iowa",
  "county": {
    "fips": "19125",
    "name": "Marion County",
    "short_name": "Marion"
  },
  "counties": [
    {
      "county_fips": "19125",
      "name": "Marion County",
      "short_name": "Marion",
      "weight": 1,
      "basis": "land_area"
    }
  ],
  "location": {
    "lat": 41.302889,
    "lng": -93.107738,
    "source": "gazetteer_internal_point",
    "timezone": "America/Chicago"
  },
  "is_zcta": true,
  "parent_zcta": null,
  "metro": {
    "cbsa_code": "37800",
    "name": "Pella, IA",
    "type": "micro",
    "csa_code": "218",
    "csa_name": "Des Moines-West Des Moines-Ames, IA"
  },
  "demographics": {
    "population": 11117,
    "households": 4663,
    "housing_units": 5133,
    "median_age": 42.9,
    "median_household_income": 74693,
    "median_home_value": 196700,
    "median_rent": 815,
    "pct_bachelors_plus": 28,
    "mean_commute_min": 23.5,
    "density_per_sqmi": 66.1
  },
  "business": {
    "establishments": 240,
    "employees": 3841,
    "annual_payroll_thousands": 195533
  },
  "tax": {
    "irs_returns": 5280,
    "irs_agi_thousands": 362132
  },
  "area": {
    "land_sqmi": 168.15,
    "water_sqmi": 7.645
  },
  "nearest_zips": [
    {
      "zip": "50062",
      "miles": 8.5,
      "city": "Melcher Dallas",
      "state": "IA"
    },
    {
      "zip": "50057",
      "miles": 8.6,
      "city": "Columbia",
      "state": "IA"
    },
    {
      "zip": "50119",
      "miles": 8.7,
      "city": "Harvey",
      "state": "IA"
    },
    {
      "zip": "50163",
      "miles": 8.9,
      "city": "Melcher Dallas",
      "state": "IA"
    },
    {
      "zip": "50225",
      "miles": 10.2,
      "city": "Pleasantville",
      "state": "IA"
    },
    {
      "zip": "50116",
      "miles": 10.8,
      "city": "Hamilton",
      "state": "IA"
    },
    {
      "zip": "50256",
      "miles": 10.9,
      "city": "Tracy",
      "state": "IA"
    },
    {
      "zip": "50214",
      "miles": 11.8,
      "city": "Otley",
      "state": "IA"
    },
    {
      "zip": "50044",
      "miles": 12.6,
      "city": "Bussey",
      "state": "IA"
    },
    {
      "zip": "50219",
      "miles": 13.6,
      "city": "Pella",
      "state": "IA"
    }
  ],
  "release": "2026-10-12",
  "attribution": {
    "source": "zipcodes.pro",
    "url": "https://zipcodes.pro/zip/50138",
    "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."
  }
}