The U.S. unincorporated territory of Guam first required its residents to register their motor vehicles and display license plates in 1916.

In 1956, the United States, Canada, and Mexico came to an agreement with the American Association of Motor Vehicle Administrators, the Automobile Manufacturers Association and the National Safety Council that standardized the size for license plates for vehicles (except those for motorcycles) at in height by in width, with standardized mounting holes. Guam adopted these standards in 1960.

Vehicle registration is handled by the Guam Department of Revenue and Taxation, though the service is accessed through the Guam Department of Public Works compound since it was moved there in 2021.

Passenger baseplates 1947 to 1964 Image Dates issued Design Serial format Serials issued Notes 1947 Hand-stenciled black on white; "GUAM" at left and "1947" at right 1234 1 to approximately 2200 1948 Embossed black on golden yellow with border line; "GUAM" at left and "1948" at right 1234 1 to approximately 4200 First embossed plate. 1949 Embossed white on blue with border line; "GUAM" at left and "1949" at right 1234 1 to approximately 8500 Embossed orange on black with border line; "GUAM" at left and "1950" at right 1234 1 to approximately 9900 Revalidated for 1951 with silver tabs. 1952–54 Embossed black on orange with border line; "GUAM" at left and "1952" at right 12345 1 to approximately 13800 Revalidated for 1953 with silver tabs, and for 1954 with black tabs. 1955–56 Embossed white on dark green with border line; "GUAM" at left and "1955" at right 12345 1 to approximately 14000 Revalidated for 1956 with black tabs. 1957–58 Embossed black on yellow with border line; "GUAM" at left and "1957" at right 12-345 1 to approximately14-800 Revalidated for 1958 with black tabs. 1959 Embossed white on dark green with border line; "GUAM" at left and "1959" at right 12-345 1 to approximately13-900 1960 Embossed black on white with border line; "19 GUAM 60" at bottom 12-345 1 to approximately14-000 First 6" x 12" plate. 1961 Embossed white on black with border line; "19 GUAM 61" at bottom 12-345 1 to approximately14-100 1962 Embossed black on orange with border line; "19 GUAM 62" at bottom 12-345 1 to approximately17-900 1963 Embossed black on white with border line; "19 GUAM 63" at bottom 12-345 1 to approximately20-000 1964 Embossed white on blue with border line; "19 GUAM 64" at bottom 12345 1 to approximately 17500

1965 to present Since 1996, all passenger plates have featured a round mounting hole at the top right and horizontal slots in the other three corners, as with plates of Hawaii and the Northern Marianas. Image Dates issued Design Slogan Serial format Serials issued Notes 1965–69 Embossed blue on white with border line Hafa Adai 12345 1 to approximately 38800 1970–73 Embossed golden yellow on dark green with border line; latte stone graphics at left and right America's Day Begins In Guam USA 12345 1 to approximately 55200 1974–77 Embossed black on reflective white with border line; "74" at bottom left Hafa Adai 12-345 1 to approximately 57-500 1977–78 12345 57501 to approximately 61000 1978–80 As above, but without "74" 61001 to approximately 72500 1980–82 As above, but with shorter dies 72501 to approximately 83500 1983–86 Embossed blue on reflective white with border line; ox cart graphic at bottom left Hub of the Pacific 12345 1 to approximately 87000 1986–93 Embossed dark green on reflective white; graphic in center featuring pale green map and two green latte stones Hafa Adai ABC 123 AAA 001 to approximately AFN 999 1994 – February 26, 2009 Embossed black on reflective white; gold map graphic in center Tano Y Chamorro Coded by municipality: ABC1234 (variable number of digits following letters) ABC123A (following exhaustion of above format) Varies by village: ABC 1 to ABC9999 ABC001A to present February 27, 2009"DRT launches new license plates" – present Embossed black on reflective white; graphic in center featuring gray latte stone and three red bougainvillea flowers Tano Y Chamorro Coded by municipality: AB 1234

Coding

Passenger, 1994 On the 1994 base, the letters of passenger plate serials indicated the village of issuance. These three-letter codes were displayed in a smaller font size than was the numerical portion of the plate serial. Village Code Agana AGA Agat AGT Agana Heights AHT Asan-Maina ASA Barrigada BAR Chalan Pago CHP Dededo DED Inarajan INA Maite MAI Mangilao MAN Merizo MER Mongmong MNG Ordot ORD Piti PIT Sinajana SNJ Santa Rita STR Talofofo TAL Tamuning TAM Toto TOT Tumon TUM Umatac UMA Yigo YIG Yona YON

On the 2009 base, the letters of passenger plate serials again indicate the village of issuance. These two-letter codes are displayed in the same font size as is the numerical portion of the plate serial.

Village Code Agat AT Asan-Maina AN Barrigada BR Dededo DE Hagåtña HG Inarajan IN Maite ME Mangilao MN MongMong MG Merizo MZ Ordot OR Piti PT Talofofo TL Toto TO Tumon TU Tamuning TM Umatac UM Yigo YG Yona YN

Non-passenger On the 1994 base, commercial truck plates were coded by location of issuance, but using a different geographical coding system than for passenger plates. These codes were based on more specific geographical areas or geographical features, rather than political jurisdictions.

Bus, dealer, taxi, and trailer plates were coded only by type, not location of issuance.

Image Type Serial format Code Location Commercial Truck 1234ABC FAP Fort Apugan (Hagåtña) FSO Fort Soledad, Umatac MLL Mount Lamlam PDE Plaza de España (Hagåtña) TFL Talofofo Falls, Talofofo TLP Two Lovers Point (Tumon) Bus BUS 123 BUS all Dealer DLR 123 DLR Government of Guam 1234 none Taxi TXI 123 TXI Trailer 1234 TRL

Optional plates Image Type First issued Design Serial format Notes Veteran—United States Air Force Blue on reflective white with full-color graphics of the flag of the United States and the flag of Guam AF 123 Veteran—United States Navy Blue on reflective white with full-color graphics of the flag of the United States and the flag of Guam N 123

Other plates Image Type First issued Design Slogan Serial format Notes Consular 1986 As 1986–93 passenger base Hafa Adai Naval Base 1960 White on yellow 1234

References

External links Plateshack.com – Guam Y2K