{
  "@context": [
    "https://schema.org",
    {
      "ec": "https://entitycodes.org/vocab#"
    }
  ],
  "@type": "DefinedTerm",
  "@id": "https://entitycodes.org/naics/491110/",
  "identifier": "491110",
  "name": "Postal Service",
  "description": "This industry comprises establishments primarily engaged in providing mail services under a universal service obligation.  Mail services include the carriage of letters, printed matter, or mailable packages, including acceptance, collection, processing, and delivery.  Due to the infrastructure requirements of providing mail service under a universal service obligation, postal service establishments often provide parcel and express delivery services in addition to the mail service.  Establishments primarily engaged in performing one or more parts of the basic mail service, such as sorting, routing and/or delivery (except bulk transportation of mail) are included in this industry.",
  "url": "https://entitycodes.org/naics/491110/",
  "inDefinedTermSet": {
    "@type": "DefinedTermSet",
    "name": "NAICS 2022",
    "url": "https://entitycodes.org/naics/"
  },
  "sameAs": [
    "https://www.census.gov/naics/?input=491110&year=2022"
  ],
  "additionalProperty": [
    {
      "@type": "PropertyValue",
      "name": "SBA size standard",
      "value": "$9,000,000 receipts",
      "unitText": "USD receipts",
      "description": "13 CFR 121.201, as-of 2023-03-17"
    }
  ],
  "ec:crosswalk": [
    {
      "system": "SIC 1987",
      "code": "4311",
      "title": "United States Postal Service",
      "confidence": "chain",
      "via": "SIC1987:4311\u2192NAICS1997:49111\u21922002:491110\u21922007:491110\u21922012:491110\u21922017:491110\u21922022:491110",
      "url": "https://entitycodes.org/sic/4311/"
    },
    {
      "system": "SIC 1987",
      "code": "7389",
      "title": "Business Services",
      "confidence": "chain",
      "via": "SIC1987:7389\u2192NAICS1997:49111\u21922002:491110\u21922007:491110\u21922012:491110\u21922017:491110\u21922022:491110",
      "url": "https://entitycodes.org/sic/7389/"
    }
  ],
  "ec:provenance": {
    "definition": {
      "source": "US Census 2022 NAICS Manual",
      "type": "US gov \u2014 public domain"
    },
    "crosswalk": {
      "source": "Census NAICS\u2194SIC concordance",
      "method": "transitive chain (NOT direct)"
    },
    "sba_size_standard": {
      "source": "SBA Table of Size Standards (13 CFR 121.201)",
      "as_of": "2023-03-17"
    }
  },
  "license": "https://www.usa.gov/government-works",
  "dateModified": "2026-07-21",
  "isPartOf": {
    "@type": "DefinedTerm",
    "identifier": "4911",
    "name": "Postal Service",
    "@id": "https://entitycodes.org/naics/4911/"
  }
}