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U.S. Government License Plates


Federal Government Plates
  Before 1942: Plates Procured and Issued Independently By Agencies
  Since 1942: Four Styles of Federal Govt. Plates
  Federal License Plate Numbering
  Diplomatic Plates Issued Since 1984 (separate page)

World War II-era U.S. Dept. of Agriculture plate no. A9060
c.1950s U.S. Dept. of Agriculture plate no. A-58097
U.S. Dept. of Agriculture 1980s base no. A193958
U.S. Dept. of Agriculture 2001 base no. A 332064
U.S. Dept. of Agriculture 2009 base no. A 350225

Evolution of U.S. Dept. of Agriculture License Plates Since 1942

Introduction and Historical Summary

Although today's federal government plates have a uniform appearance, there are a large number of agencies and branches for which distinctive plates are issued, which might cause an observer to consider their distinctiveness similar to that of plates from different states. Prior to the adoption of a uniform plate design in 1942, although there were fewer agencies than today there were still enough of them that the number of plate types and styles is presently impossible to quantify, or even to estimate. Unfortunately there is no known authoritative documentation about the history of license plates displayed on U.S. government-owned vehicles, so most of what is known and documented on this page is based upon surviving examples and plates shown in photographs.

The earliest plates displayed on vehicles operated by federal government agencies were procured and issued independently of other agencies or a central federal vehicle registration office. A uniform plate was introduced in 1942, in some cases with agencies indicated by letter prefixes. This basic system is still used today. Separate from these federal plates is a relatively short-lived series of plates issued by the D.C. government for federally-owned vehicles. Exactly how these vehicles differed in their use and oversight from vehicles upon which distinctive U.S. government plates were displayed is unknown.

District of Columbia Plates for Federal Government Vehicles

When letter prefixes began to be used on District of Columbia license plates in 1927 the letter A was reserved for plates operated by the District and federal governments. (An example is shown here.) No evidence has been found to suggest that distinctively-marked D.C. plates were provided for government-owned vehicles prior to 1927. The types (D.C. and U.S. Government) had been separated by 1936, with the type name clearly embossed, a change that probably occurred in 1935 when the system of using letter prefixes to differentiate types was discarded.

1936 U.S. Govt. plate no. 11-097
1938 U.S. Govt. truck plate no. 132
Mid- to late 1950s U.S. Govt. plate no. 2914-S
1961 (exp. 3-31-62) U.S. Govt. plate no. 235
Undated U.S. Govt. plate no. 9089
Undated U.S. Government plate no G11 5256

Except for the two earliest examples, provision has been made on each of these plates for the identification of a particular federal agency. On the white-on-dark-blue plate the small letter S suffix, displayed on a tab, indicates State Dept. use. Based upon the year tab slots to the right of U.S. GOVERNMENT, this plate, with an unusual embossed red border, is believed to date from the mid- to late 1950s.

Some plates included two-letter agency codes, hence the two tab slots on some of these plates. Based upon the spacing of plate number 9089 and the lack of agency tab slots, perhaps the agency was to have been indicated on a decal placed to the right of the number. The G of the prefix on plate no. 5256 indicates assignment by the General Services Administration to its Interagency Motor Pool System, and the 11 indicates use on an intermediate or subcompact passenger car.

Before 1942: Federal Government Plates Procured and Issued Independently By Agencies

Agency-specific plates appear to have been issued almost as early as the first state-issued plates, which is to say that some porcelain-enamel plates made for government agencies are known. Vehicle registration apparently was addressed individually by the various federal agencies until the 1942 introduction of the government's first uniform baseplate (as discussed below). That many agencies were then using plates of their own design is confirmed in this passage from a newspaper article about the new 1942 plates: “Appearance of the Government's superduper insignia, which will replace some 40 miscellaneous designs previously in use, came simultaneous with radical changes of design in current plates of many of the States.”

Perhaps the best known non-uniform federal government plates are those in a series used by the Civilian Conservation Corps. In the near future we will endeavor to post here photographs of a variety of pre-1942 government plates, but information about their introduction timing and period of issuance is likely to be difficult to find.

Since 1942: Four Styles of Uniform Federal Government Plates

With just a few exceptions, including multi-year baseplates being introduced in the early 2010s, uniform license plates issued and used by the United States government have been undated and issued in relatively small quantities, making them difficult for today's hobbyist to date and collect. Plates that include DISTRICT OF COLUMBIA are considered to be D.C. plates, as opposed to federal plates to which the city name has been added, so the bases pictured above are not repeated below.

Four styles of semi-permanent baseplates have been identified:

  1. 1942 Federal Shield base
  2. 1950s Tri-color base
  3. 1960s-2001 Blue-on-white base
  4. 2001 UNICOR Flat base

1942 Federal Shield Base

World War II-era U.S. Dept. of Agriculture plate no. A9060   World War II-era U.S. Dept. of Agriculture plate no. J601
1942 base Dept. of Agriculture
1942 base Justice Department

The 1942 issue is the first uniform federal government license plate. Our information about this plate comes from an Apr. 3, 1942, Washington Times-Herald article in which “Uncle Sam's new plates” are announced. At the time 19,000 pairs had been issued, out of a planned initial production run of 100,000. The 7"'x14" plates were made at Lorton Reformatory, where D.C. plates were made at the time. They are 20-gauge steel, a heavier material than used for plates intended to be used for only one year, because the intended period of use was five years. “Enameling is also extra heavy because we expect them to last the full life of the car,” said a spokesperson for the Bureau of the Budget, the predecessor agency to the current Office of Management and Budget.

The plate design, which was unlike anything being used in the United States at the time, was approved by Pres. Franklin D. Roosevelt. “The President liked the final design very much,” reported the Budget Bureau, “and the tag will be used on some of the White House cars.”

Numbering on these plates is either an all-number format or one (or possibly two) agency-specific prefix letter followed by a serial number. The all-number plates are believed to have been equivalent to today's G-series Interagency Motor Pool series. Among letters observed on 1942 plates are A (Dept. of Agriculture), I (Dept. of the Interior), and J (Justice Dept.). Others undoubtedly exist although a complete list of codes used on this base has not been identified. The largest initial order, 10,000 sets, was placed by the Army Corps of Engineers.

A "large federal shield" plate on a vehicle involved in an accident.
1942 base D.C.-based motor pool plate #1178
(pre-GSA but similar application)

1950s Tri-Color Base

1952 (exp. 1953) U.S. Government plate no. 236   c.1950s U.S. Dept. of Agriculture plate no. A-58097
1950s base D.C.-based motor pool
(pre-GSA but similar application)
1950s base Dept. of Agriculture

This base continued the tri-color format of the federal shield base but in a more traditional format. Validation tabs were used for at least one year, as shown on plate no. 236, making it the earliest known uniform federal government plate with an expiration designation or any indication of its period of use. Dies used to make the Dept. of Agriculture plate pictured indicate that some plates of this base were made by Irwin-Hodson Co., of Portland, Oregon.

1960s-2001 Blue-on-White Base

U.S. Postal Service 1970s base no. P 07112   U.S. Dept. of Agriculture 1980s base no. A193958
1970s base U.S. Postal Service
1980s base Dept. of Agriculture

The longest-used federal government plate is the undated blue-on-white base, which was issued from the 1960s through Sept. 2001, with design variations made during that period such as the introduction of a reflective background. It was on this base that we first observed vehicle type codes used on the largest series of plates, those of the General Services Administration, which feature a G prefix followed by a two-number code to indicate the vehicle type.

Since 2001: UNICOR Flat Base

Completely flat plates made by the federal prison system's industries division, UNICOR, were introduced on October 1, 2001. There have been two variations of these plates, the 2001 and 2009 bases, both of which are made with DLP (Digital License Plate) technology. On both bases the size of registration number characters varies depending on the registration number format.

2001 Base. On earlier UNICOR-made plates the American flag background graphic is blue. These plates have a blue border and no expiration date. Additional examples are pictured within the prefix code list that appears below.

U.S. Dept. of Agriculture 2001 base no. A 332064   U.S. GSA Interagency Motor Pool 2001 base no. G13 0263A
2001 base Dept. of Agriculture
2001 base GSA Interagency Motor Pool

2009 Base. The flag graphic on more recent plates uses both red and blue, and there is a red border and an expiration date. This plate style was introduced in 2008 or 2009 in conjunction with the 2008 creation of the Federal Motor Vehicle Registration System within the General Services Administration. These plates are marked with an expiration month and year that is eight years after the date of issuance.

U.S. Dept. of Agriculture 2009 base no. A 350225   U.S. GSA Interagency Motor Pool 2009 base no. G13 0994H
2009 base Dept. of Agriculture
2009 base GSA Interagency Motor Pool

U.S. Capitol Police vehicle parked at the Capitol.
Each of the U.S. Capitol Police vehicles in these photographs is
registered with GSA Interagency Motor Pool plates of the 2009 base.
U.S. Capitol Police van parked at the Capitol.

Federal License Plate Numbering

When uniform federal government plates were introduced in 1942, some were marked with a letter prefix to indicate the agency to which the vehicle was assigned. Today, all federal plates are numbered in this fashion. G-series plates, which are assigned by the General Services Administration (GSA) for its Interagency Motor Pool, comprise the majority of federal plates. GSA plates include a numeric code following the G prefix, presented diagonally, to indicate the vehicle type.

Agency Prefix Codes

Lists of the federal vehicle registration agency codes have been published throughout their 50+ years of use, and codes are added and removed from the roster of active codes as the structure of federal agencies is changed. When complete, this list will include all codes identified as ever having been used, but some may now be obsolete. Information presented in bold comes from a Jan. 2006 GSA list, the most recent list obtained directly from a government source. In instances in which more than one agency is listed for a single prefix code, the 2006 list code is the most current. Several of the single-letter codes date back to 1942, making them the oldest still in use.

Dept. of Agriculture
Air Coordinating Committee - agency created Sept. 1946, abolished Aug. 1960
ACTION - agency created July 1971, abolished April 1994
Air Force
American Forces Information Services
Architect of the Capitol
Appalachian Regional Commission
Bureau of Public Roads - agency created 1949, abolished 1967
U.S. Army Corps of Engineers c.1990s base no. CE27805   U.S. Army Corps of Engineers 2001 base no. CE1270
c.1990s base Army Corps of Engineers
2001 base Army Corps of Engineers
Dept. of Commerce
Civil Aeronautics Board - agency created 1940, abolished 1985

Army Corps of Engineers, Civil Works

Commodity Futures Trading Commission
Defense Information Systems Agency
U.S. Capitol Police
Consumer Products Safety Commission
Court Services and Offender Supervision Agency for the District of Columbia
Civil Service Commission - agency created 1872, abolished 1979
Dept. of Defense
Defense Contract Audit Agency
Defense Commissary Agency
Dept. of Homeland Security
Defense Intelligence Agency
Defense Information Systems Agency
Defense Logistics Agency
Dept. of Transportation
U.S. Dept. of Energy c.1980s base no. E-29812   Equal Employment Opportunity Commission 2001 base no. EEOC 0001
c.1980s base Dept. of Energy
2001 base Equal Employment
Opportunity Commission
Dept. of Energy
Enrichment Corporation
Equal Employment Opportunity Commission
Executive Office of the President
Council of Economic Advisors
National Security Council
Office of Management and Budget
Environmental Protection Agency
Federal Communications Commission
Farm Credit Administration
Federal Deposit Insurance Corporation
Federal Mediation and Conciliation Service
Federal Reserve Board
Federal Trade Commission
General Services Administration fleet
Governmental Accountability Office


Government Printing Office
General Services Administration
Dept. of Health and Human Services
Dept. of Housing and Urban Development
U.S. Dept. of the Interior c.1990s base no. I269048   U.S. Dept. of the Interior 2001 base no. I411694
c.1990s base Dept. of the Interior
2001 base Dept. of the Interior
Dept. of the Interior
U.S. Information Agency
International Broadcasting Bureau
Dept. of Justice
Judicial Branch
Dept. of Labor
D.C. Redevelopment Land Agency
Legislative Branch
Library of Congress
Marine Corps
Merit Systems Protection Board
NASA 2001 base no. NA 000775   U.S. Navy 2001 base no. N94 71249
2001 base NASA
2001 base U.S. Navy
National Aeronautics and Space Administration
National Endowment for the Arts
National Guard Bureau
National Gallery of Art
National Labor Relations Board
National Capital Planning Commission
Nuclear Regulatory Commission
National Science Foundation
Office of Personnel Management
U.S. Postal Service
Pension Benefit Guaranty Corporation
Pretrial Services Agency
Presidio Trust
Railroad Retirement Board
U.S. Senate 2001 base no. SAA 007   Smithsonian Institution 2001 base no. SI-708
2001 base U.S. Senate
2001 base Smithsonian Institution


Dept. of State
U.S. Senate
Small Business Administration
Defense Security Cooperation Agency
Securities and Exchange Commission
Soldiers' and Airmen's Home
Smithsonian Institution
Selective Service System
Dept. of the Treasury
Tennessee Valley Authority
Peace Corps
Dept. of Veterans Affairs

Non-Passenger Plates

Small-format plates for use on motorcycles and trailers are made, although some trailers have been seen with regular plates on them, and there are also 6"x12" trailer plates. Distinctive federal government motorcycle plates presumably date back to 1942 but we only have photos of more recent examples. Numbering may be distinguished from regular plates with a type designation prefix or suffix letter.

Capitol Police 2001 base Trailer plate no. CP030T   Capitol Police 2001 base Motorcycle plate no. CP038M
2001 base Capitol Police Trailer (left) and Motorcycle

U.S. Dept. of Agriculture 2001 small-format Trailer plate no. A16591   U.S. Dept. of Homeland Security 2009 Motorcycle plate no. DHS 0002
2001 base
Dept. of Agriculture
2009 base Dept. of Homeland Security Motorcycle

GSA Vehicle Classification Prefix Codes

License plates affixed to vehicles registered in the Interagency Motor Pool of the General Services Administration begin with a code used to indicate the vehicle type. This numbering format is thought to have been introduced in the mid-1960s. These are the codes (including the G agency indicator):

Vehicle Type
compact sedan
midsize sedan
subcompact sedan
large sedan
subcompact station wagon
compact station wagon
midsize station wagon
light truck, 4x2, under 6,000 GVWR
light truck, 4x2, 6,000 to 8,499 GVWR
light truck, 4x2, 8,500 to 12,499 GVWR
light truck, 4x4, under 6,000 GVWR
light truck, 4x4, 6,000 to 8,499 GVWR
light truck, 4x4, 8,500 to 12,499 GVWR
medium truck, cab and chassis
medium truck, cab with stake body
medium truck, stake dump
medium truck, cab with van body
medium truck, cab with refrigerator van
medium truck, cab with utility-maintenance body
medium truck, multi-stop van, FC
medium truck, cab with dump body
medium truck, tractor with cab
heavy truck, 4x2 gasoline
heavy truck, 4x4 gasoline
heavy truck
heavy truck, 4x2 diesel
heavy truck, 4x4 diesel
heavy truck, 4x6 diesel
heavy truck, other
special equipment


D.C. flag

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