{
  "zip": "61102",
  "type": "standard",
  "type_source": "inferred",
  "city": "Rockford",
  "other_place_names": [],
  "state": "IL",
  "state_name": "Illinois",
  "county": {
    "fips": "17201",
    "name": "Winnebago County",
    "short_name": "Winnebago"
  },
  "counties": [
    {
      "county_fips": "17201",
      "name": "Winnebago County",
      "short_name": "Winnebago",
      "weight": 0.8821,
      "basis": "land_area"
    },
    {
      "county_fips": "17141",
      "name": "Ogle County",
      "short_name": "Ogle",
      "weight": 0.1179,
      "basis": "land_area"
    }
  ],
  "location": {
    "lat": 42.228769,
    "lng": -89.162524,
    "source": "gazetteer_internal_point",
    "timezone": "America/Chicago"
  },
  "is_zcta": true,
  "parent_zcta": null,
  "metro": {
    "cbsa_code": "40420",
    "name": "Rockford, IL",
    "type": "metro",
    "csa_code": "466",
    "csa_name": "Rockford-Freeport-Rochelle, IL"
  },
  "demographics": {
    "population": 15937,
    "households": 6047,
    "housing_units": 7064,
    "median_age": 38.3,
    "median_household_income": 46599,
    "median_home_value": 98900,
    "median_rent": 883,
    "pct_bachelors_plus": 10.2,
    "mean_commute_min": 22.7,
    "density_per_sqmi": 467.2
  },
  "business": {
    "establishments": 197,
    "employees": 4087,
    "annual_payroll_thousands": 209299
  },
  "tax": {
    "irs_returns": 7340,
    "irs_agi_thousands": 345588
  },
  "area": {
    "land_sqmi": 34.113,
    "water_sqmi": 0.879
  },
  "nearest_zips": [
    {
      "zip": "61104",
      "miles": 4.5,
      "city": "Rockford",
      "state": "IL"
    },
    {
      "zip": "61105",
      "miles": 4.6,
      "city": "Rockford",
      "state": "IL"
    },
    {
      "zip": "61088",
      "miles": 5.8,
      "city": "Winnebago",
      "state": "IL"
    },
    {
      "zip": "61109",
      "miles": 6,
      "city": "Rockford",
      "state": "IL"
    },
    {
      "zip": "61106",
      "miles": 6.7,
      "city": "Rockford",
      "state": "IL"
    },
    {
      "zip": "61110",
      "miles": 6.7,
      "city": "Rockford",
      "state": "IL"
    },
    {
      "zip": "61125",
      "miles": 6.7,
      "city": "Rockford",
      "state": "IL"
    },
    {
      "zip": "61126",
      "miles": 6.7,
      "city": "Rockford",
      "state": "IL"
    },
    {
      "zip": "61130",
      "miles": 6.7,
      "city": "Loves Park",
      "state": "IL"
    },
    {
      "zip": "61131",
      "miles": 6.7,
      "city": "Loves Park",
      "state": "IL"
    }
  ],
  "release": "2026-10-12",
  "attribution": {
    "source": "zipcodes.pro",
    "url": "https://zipcodes.pro/zip/61102",
    "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."
  }
}