{
  "zip": "57551",
  "type": "standard",
  "type_source": "inferred",
  "city": "Martin",
  "other_place_names": [],
  "state": "SD",
  "state_name": "South Dakota",
  "county": {
    "fips": "46007",
    "name": "Bennett County",
    "short_name": "Bennett"
  },
  "counties": [
    {
      "county_fips": "46007",
      "name": "Bennett County",
      "short_name": "Bennett",
      "weight": 1,
      "basis": "land_area"
    }
  ],
  "location": {
    "lat": 43.191962,
    "lng": -101.708294,
    "source": "gazetteer_internal_point",
    "timezone": "America/Denver"
  },
  "is_zcta": true,
  "parent_zcta": null,
  "metro": null,
  "demographics": {
    "population": 2084,
    "households": 666,
    "housing_units": 833,
    "median_age": 36,
    "median_household_income": 70096,
    "median_home_value": 161900,
    "median_rent": 613,
    "pct_bachelors_plus": 25.6,
    "mean_commute_min": 12.5,
    "density_per_sqmi": 2.8
  },
  "business": {
    "establishments": 56,
    "employees": 483,
    "annual_payroll_thousands": 19012
  },
  "tax": {
    "irs_returns": 830,
    "irs_agi_thousands": 47288
  },
  "area": {
    "land_sqmi": 753.132,
    "water_sqmi": 4.566
  },
  "nearest_zips": [
    {
      "zip": "57714",
      "miles": 14.1,
      "city": "Allen",
      "state": "SD"
    },
    {
      "zip": "57574",
      "miles": 16.9,
      "city": "Tuthill",
      "state": "SD"
    },
    {
      "zip": "57577",
      "miles": 23.1,
      "city": "Wanblee",
      "state": "SD"
    },
    {
      "zip": "57547",
      "miles": 25,
      "city": "Long Valley",
      "state": "SD"
    },
    {
      "zip": "57716",
      "miles": 25.6,
      "city": "Batesland",
      "state": "SD"
    },
    {
      "zip": "69218",
      "miles": 29.2,
      "city": "Merriman",
      "state": "NE"
    },
    {
      "zip": "57752",
      "miles": 29.7,
      "city": "Kyle",
      "state": "SD"
    },
    {
      "zip": "57750",
      "miles": 30.1,
      "city": "Interior",
      "state": "SD"
    },
    {
      "zip": "57560",
      "miles": 30.3,
      "city": "Norris",
      "state": "SD"
    },
    {
      "zip": "57572",
      "miles": 30.9,
      "city": "Saint Francis",
      "state": "SD"
    }
  ],
  "release": "2026-10-12",
  "attribution": {
    "source": "zipcodes.pro",
    "url": "https://zipcodes.pro/zip/57551",
    "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."
  }
}