SIC Code 9621 - Regulation and Administration of Transportation

Industry Sector

Public Administration

Total Companies


Est. Employment



Government establishments primarily engaged in regulation, licensing, planning, inspection and investigation of transportation services and facilities. Motor vehicle and operator licensing is classified here. Establishments of the Coast Guard that perform functions related to the regulation, administration and operation of transportation are included here. Also included in this industry are civilian government air traffic control and aircraft inspection establishments.


SIC Code 9621 - Regulation and Administration of Transportation is a final level code of the “Public Administration” Division. There are 11,702 companies classified in this industry in the USA with an estimated employment of 2,288 people.


For some business types, there may be a similar industry to SIC Code 9621 - Regulation and Administration of Transportation that is a better classification match. Parking authorities are classified here, but the operators of lots and garages are classified in Services, SIC Code - 7521. Operators of railroads, subways, depots, ports, toll roads and bridges, and other transportation facilities are classified in Transportation and Public Utilities

Companies compiles comprehensive business data and executive contact leads for businesses within SIC Code 9621 - Regulation and Administration of Transportation. Some of the leading and most notable companies are listed below. To order a list of companies within SIC Code 9621 - Regulation and Administration of Transportation for marketing (postal mailing, telemarketing, emailing) or analytics-use, click on the link below to “Buy Business List”. Our data analysts are standing by to assist in your list setup and target marketing.

Extended SIC Code Categories for SIC 9621

For business marketing and targeting, SIC Codes have been extended to provide more specific classifications within SIC Code 9621 – Regulation and Administration of Transportation. Extended SIC Codes are being continuously updated to reflect the current business environment.

6-digit SIC

  • 962101 Federal Government-Transportation Prgrms
  • 962102 State Government-Transportation Programs
  • 962103 County Govt-Transportation Programs
  • 962104 City Government-Transportation Programs
  • 962105 Port Services
  • 962107 Transportation Authorities
  • 962108 Aircraft Inspection

7-digit SIC

  • 9621001 Government-Transportation Programs
  • 9621002 State Government-Transportation Programs
  • 9621003 Federal Government-Transportation Programs
  • 9621004 Government-Air Traffic Control Operations
  • 9621005 Bureau Of Public Roads
  • 9621006 City Government-Transportation Programs
  • 9621007 Coast Guard For Transportation Programs
  • 9621008 Nonoperating Government For Transportation Programs
  • 9621009 Government-Motor Vehicle Licensing & Inspections
  • 9621010 County Government-Transportation Programs
  • 9621011 Licensing Agencies
  • 9621012 Transportation Licensing & Inspections
  • 9621013 Aircraft Regulating Agencies
  • 9621014 Water Vessel Regulation
  • 9621015 Transit System Authorities
  • 9621016 Port Authorities
  • 9621017 Aircraft Inspection
  • 9621018 Port Services
  • 9621019 Motor Carrier Licensing & Inspection Office, Government
  • 9621020 Regulation, Administration Of Transportation
  • 9621021 Interstate Commerce Commission
  • 9621022 Railroad & Warehouse Commission

8-digit SIC

  • 96210000 Regulation, Administration Of Transportation
  • 96210100 Aircraft Regulating Agencies
  • 96210101 Air Traffic Control Operations, Government
  • 96210102 Aircraft Inspection, Government
  • 96210200 Licensing Agencies
  • 96210201 Licensing, Inspection: Transportation Facilities, Services
  • 96210202 Motor Carrier Licensing And Inspection Office, Government
  • 96210203 Motor Vehicle Licensing And Inspection Office, Government
  • 96210300 Water Vessels And Port Regulating Agencies
  • 96210301 Coast Guard, Regulation And Administration Of Transportation
  • 96210302 Port Authority Or District: Government, Nonoperating
  • 96210400 Regulation, Administration Of Transportation, Level Of Gover
  • 96210401 Regulation, Administration Of Transportation, Federal Govern
  • 96210402 Regulation, Administration Of Transportation, State Governme
  • 96210403 Regulation, Administration Of Transportation, County Governm
  • 96210404 Regulation, Administration Of Transportation, Local Governme
  • 96219901 Bureau Of Public Roads
  • 96219902 Interstate Commerce Commission
  • 96219903 Railroad And Warehouse Commission, Government
  • 96219904 Transit System Or Authority: Government, Nonoperating
  • 96219905 Transportation Department: Government, Nonoperating