{
    "code": "421",
    "title": "Trucking and Courier Services, except Air",
    "sic_manual": "OSHA SIC Manual",
    "level": "Industry group",
    "major_group_code": "42",
    "parent_code": "42",
    "parent_title": "Motor Freight Transportation and Warehousing",
    "plain_english_definition": "SIC 421 - Trucking and Courier Services, except Air is an SIC industry group within SIC 42 - Motor Freight Transportation and Warehousing. It groups the following 4-digit SIC industries: SIC 4212 - Local Trucking without Storage, SIC 4213 - Trucking, except Local, SIC 4214 - Local Trucking with Storage, and SIC 4215 - Courier Services, except by Air.\n\nUse SIC 421 when referring to this industry group as a whole. When the establishment's specific activity is known, use the appropriate 4-digit SIC industry within the group.",
    "summary_plain": "",
    "official_definition": "",
    "official_source": "https://www.osha.gov/data/sic-manual/major-group-42",
    "classification_note": "",
    "included_activities": [],
    "excluded_activities": [
        {
            "label": "Public Warehousing and Storage",
            "code": "422",
            "title": "Public Warehousing and Storage",
            "url": "https://siccode.com/sic-code/422/public-warehousing-storage"
        },
        {
            "label": "Terminal and Joint Terminal Maintenance",
            "code": "423",
            "title": "Terminal and Joint Terminal Maintenance",
            "url": "https://siccode.com/sic-code/423/terminal-joint-terminal-maintenance"
        }
    ],
    "confused_codes": [],
    "official_siblings": [
        {
            "code": "421",
            "title": "Trucking and Courier Services, except Air",
            "url": "https://siccode.com/sic-code/421/trucking-courier-services",
            "label": "Industry group"
        },
        {
            "code": "422",
            "title": "Public Warehousing and Storage",
            "url": "https://siccode.com/sic-code/422/public-warehousing-storage",
            "label": "Industry group"
        },
        {
            "code": "423",
            "title": "Terminal and Joint Terminal Maintenance",
            "url": "https://siccode.com/sic-code/423/terminal-joint-terminal-maintenance",
            "label": "Industry group"
        }
    ],
    "official_children": [
        {
            "code": "4212",
            "title": "Local Trucking without Storage",
            "url": "https://siccode.com/sic-code/4212/local-trucking",
            "label": "Industry"
        },
        {
            "code": "4213",
            "title": "Trucking, except Local",
            "url": "https://siccode.com/sic-code/4213/trucking",
            "label": "Industry"
        },
        {
            "code": "4214",
            "title": "Local Trucking with Storage",
            "url": "https://siccode.com/sic-code/4214/local-trucking-storage",
            "label": "Industry"
        },
        {
            "code": "4215",
            "title": "Courier Services, except by Air",
            "url": "https://siccode.com/sic-code/4215/courier-services",
            "label": "Industry"
        }
    ],
    "related_naics_codes": [
        {
            "code": "4841",
            "title": "General Freight Trucking",
            "url": "https://siccode.com/naics-code/4841/freight-trucking"
        },
        {
            "code": "4842",
            "title": "Specialized Freight Trucking",
            "url": "https://siccode.com/naics-code/4842/specialized-freight-trucking"
        },
        {
            "code": "4921",
            "title": "Couriers and Express Delivery Services",
            "url": "https://siccode.com/naics-code/4921/couriers-express-delivery-services"
        },
        {
            "code": "4922",
            "title": "Local Messengers and Local Delivery",
            "url": "https://siccode.com/naics-code/4922/local-messengers-local-delivery"
        },
        {
            "code": "5621",
            "title": "Waste Collection ",
            "url": "https://siccode.com/naics-code/5621/waste-collection"
        }
    ],
    "example_companies": [
        {
            "name": "Steelman Transportation Inc",
            "url": "https://siccode.com/business/steelman-transportation-inc",
            "city": "Springfield",
            "state": "MO",
            "reviewed": false
        },
        {
            "name": "Holland Inc",
            "url": "https://siccode.com/business/holland-inc",
            "city": "Holland",
            "state": "MI",
            "reviewed": false
        },
        {
            "name": "C.R. England",
            "url": "https://siccode.com/business/c-r-england",
            "city": "West Valley City",
            "state": "UT",
            "reviewed": false
        },
        {
            "name": "CRST International Inc",
            "url": "https://siccode.com/business/crst-international-inc",
            "city": "Cedar Rapids",
            "state": "IA",
            "reviewed": false
        },
        {
            "name": "National Retail Systems Inc",
            "url": "https://siccode.com/business/national-retail-systems-inc",
            "city": "North Bergen",
            "state": "NJ",
            "reviewed": false
        },
        {
            "name": "United Parcel Service Inc",
            "url": "https://siccode.com/business/united-parcel-service-inc",
            "city": "Atlanta",
            "state": "GA",
            "reviewed": false
        },
        {
            "name": "Schneider National Inc",
            "url": "https://siccode.com/business/schneider-national-inc",
            "city": "Green Bay",
            "state": "WI",
            "reviewed": false
        },
        {
            "name": "JB Hunt Transport Services Inc",
            "url": "https://siccode.com/business/jb-hunt-transport-services-inc",
            "city": "Lowell",
            "state": "AR",
            "reviewed": false
        },
        {
            "name": "R And L Carriers",
            "url": "https://siccode.com/business/r-and-l-carriers",
            "city": "Wilmington",
            "state": "OH",
            "reviewed": false
        },
        {
            "name": "Watkins Associated Industries Inc",
            "url": "https://siccode.com/business/watkins-associated-industries-inc",
            "city": "Atlanta",
            "state": "GA",
            "reviewed": false
        },
        {
            "name": "Werner Enterprises Inc",
            "url": "https://siccode.com/business/werner-enterprises-inc",
            "city": "Omaha",
            "state": "NE",
            "reviewed": false
        }
    ],
    "company_count": 71986,
    "email_contact_count": 21886,
    "phone_count": 44301,
    "website_count": 70981,
    "database_as_of": "Nov 6, 2026",
    "count_type": "commercial",
    "count_disclaimer": "These are SICCODE.com commercial database counts, not official government establishment totals. Website-Reviewed & Enriched is a separate review of company websites for products, services, markets, and fit.",
    "canonical_url": "https://siccode.com/sic-code/421/trucking-courier-services",
    "json_url": "https://siccode.com/sic-code/421.json",
    "reviewed_by": "SICCODE.com Classification Review Team",
    "last_updated": "October 2026"
}