{
  "zip": "78588",
  "type": "standard",
  "type_source": "inferred",
  "city": "San Isidro",
  "other_place_names": [],
  "state": "TX",
  "state_name": "Texas",
  "county": {
    "fips": "48427",
    "name": "Starr County",
    "short_name": "Starr"
  },
  "counties": [
    {
      "county_fips": "48427",
      "name": "Starr County",
      "short_name": "Starr",
      "weight": 1,
      "basis": "land_area"
    }
  ],
  "location": {
    "lat": 26.73968,
    "lng": -98.39852,
    "source": "gazetteer_internal_point",
    "timezone": "America/Chicago"
  },
  "is_zcta": true,
  "parent_zcta": null,
  "metro": {
    "cbsa_code": "40100",
    "name": "Rio Grande City-Roma, TX",
    "type": "micro",
    "csa_code": "365",
    "csa_name": "McAllen-Edinburg, TX"
  },
  "demographics": {
    "population": 289,
    "households": 67,
    "housing_units": 122,
    "median_age": 41.2,
    "median_household_income": 94821,
    "median_home_value": 52800,
    "median_rent": 520,
    "pct_bachelors_plus": 28.8,
    "mean_commute_min": 18.5,
    "density_per_sqmi": 7.9
  },
  "business": {
    "establishments": 6,
    "employees": 24,
    "annual_payroll_thousands": 1396
  },
  "tax": {
    "irs_returns": 140,
    "irs_agi_thousands": 6123
  },
  "area": {
    "land_sqmi": 36.615,
    "water_sqmi": 0
  },
  "nearest_zips": [
    {
      "zip": "78536",
      "miles": 7.2,
      "city": "Delmita",
      "state": "TX"
    },
    {
      "zip": "78563",
      "miles": 10,
      "city": "Linn",
      "state": "TX"
    },
    {
      "zip": "78591",
      "miles": 11.7,
      "city": "Santa Elena",
      "state": "TX"
    },
    {
      "zip": "78353",
      "miles": 13.9,
      "city": "Encino",
      "state": "TX"
    },
    {
      "zip": "78541",
      "miles": 21.2,
      "city": "Edinburg",
      "state": "TX"
    },
    {
      "zip": "78582",
      "miles": 25.6,
      "city": "Rio Grande City",
      "state": "TX"
    },
    {
      "zip": "78360",
      "miles": 28,
      "city": "Guerra",
      "state": "TX"
    },
    {
      "zip": "78540",
      "miles": 28.4,
      "city": "Edinburg",
      "state": "TX"
    },
    {
      "zip": "78542",
      "miles": 28.5,
      "city": "Edinburg",
      "state": "TX"
    },
    {
      "zip": "78549",
      "miles": 28.6,
      "city": "Hargill",
      "state": "TX"
    }
  ],
  "release": "2026-10-12",
  "attribution": {
    "source": "zipcodes.pro",
    "url": "https://zipcodes.pro/zip/78588",
    "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."
  }
}