{
  "zip": "48191",
  "type": "standard",
  "type_source": "inferred",
  "city": "Willis",
  "other_place_names": [],
  "state": "MI",
  "state_name": "Michigan",
  "county": {
    "fips": "26161",
    "name": "Washtenaw County",
    "short_name": "Washtenaw"
  },
  "counties": [
    {
      "county_fips": "26161",
      "name": "Washtenaw County",
      "short_name": "Washtenaw",
      "weight": 0.8767,
      "basis": "land_area"
    },
    {
      "county_fips": "26115",
      "name": "Monroe County",
      "short_name": "Monroe",
      "weight": 0.1233,
      "basis": "land_area"
    }
  ],
  "location": {
    "lat": 42.121147,
    "lng": -83.565682,
    "source": "gazetteer_internal_point",
    "timezone": "America/Detroit"
  },
  "is_zcta": true,
  "parent_zcta": null,
  "metro": {
    "cbsa_code": "11460",
    "name": "Ann Arbor, MI",
    "type": "metro",
    "csa_code": "220",
    "csa_name": "Detroit-Warren-Ann Arbor, MI"
  },
  "demographics": {
    "population": 4403,
    "households": 1662,
    "housing_units": 1708,
    "median_age": 47.2,
    "median_household_income": 102833,
    "median_home_value": 271900,
    "median_rent": 1387,
    "pct_bachelors_plus": 24.4,
    "mean_commute_min": 28.5,
    "density_per_sqmi": 273.2
  },
  "business": {
    "establishments": 46,
    "employees": 244,
    "annual_payroll_thousands": 12160
  },
  "tax": {
    "irs_returns": 1920,
    "irs_agi_thousands": 136917
  },
  "area": {
    "land_sqmi": 16.115,
    "water_sqmi": 0.064
  },
  "nearest_zips": [
    {
      "zip": "48190",
      "miles": 2.1,
      "city": "Whittaker",
      "state": "MI"
    },
    {
      "zip": "48111",
      "miles": 5.8,
      "city": "Belleville",
      "state": "MI"
    },
    {
      "zip": "48197",
      "miles": 6.3,
      "city": "Ypsilanti",
      "state": "MI"
    },
    {
      "zip": "48160",
      "miles": 6.4,
      "city": "Milan",
      "state": "MI"
    },
    {
      "zip": "48159",
      "miles": 6.7,
      "city": "Maybee",
      "state": "MI"
    },
    {
      "zip": "48112",
      "miles": 7.1,
      "city": "Belleville",
      "state": "MI"
    },
    {
      "zip": "48164",
      "miles": 8.7,
      "city": "New Boston",
      "state": "MI"
    },
    {
      "zip": "48110",
      "miles": 9.3,
      "city": "Azalia",
      "state": "MI"
    },
    {
      "zip": "48117",
      "miles": 9.4,
      "city": "Carleton",
      "state": "MI"
    },
    {
      "zip": "48198",
      "miles": 10.7,
      "city": "Ypsilanti",
      "state": "MI"
    }
  ],
  "release": "2026-10-12",
  "attribution": {
    "source": "zipcodes.pro",
    "url": "https://zipcodes.pro/zip/48191",
    "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."
  }
}