{
  "publisher": "ZipNumbers",
  "license": "CC BY 4.0",
  "zip": "21704",
  "city": null,
  "state": null,
  "state_slug": "maryland",
  "county": "Frederick County",
  "county_fips": "24021",
  "demographics": {
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    "median_household_income": 164457,
    "median_home_value": 585900,
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    "median_age": 38.4,
    "poverty_pct": 3.2,
    "owner_occupied_pct": 81.3,
    "vintage": "2019-2023 ACS 5-year",
    "source": "US Census Bureau, ACS 2019-2023 5-year estimates",
    "source_url": "https://www.census.gov/programs-surveys/acs"
  },
  "sales_tax": null,
  "area_codes": [],
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    "zip_profile": "https://zipnumbers.com/zips/maryland/21704",
    "sales_tax": null
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  "retrieved_from": "https://zipnumbers.com/api/public/zip/21704"
}