# Vehicle registration plates of Idaho

The U.S. state of Idaho first required its residents to register their motor vehicles and display license plates in 1913. As of 2024, plates are issued by the Idaho Transportation Department through its Division of Motor Vehicles. Front and rear plates are required for most classes of vehicles, while only rear plates are required for motorcycles and trailers.

## Passenger baseplates
### 1913 to 1967

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 6 inches (15 cm) in height by 12 inches (30 cm) in width, with standardized mounting holes. The 1956 (dated 1957) issue was the first Idaho license plate that fully complied with these standards: the issues from 1952 through 1955 (dated 1953 through 1956) were all 6 inches in height by 12 inches in width, but had non-standard mounting holes.
| Dates issued | Design | Slogan | Serial format | Serials issued | Notes |
| 1913 | Embossed white serial on blue plate; "IDAHO 1913" at right | none | 1234 | 1 to approximately 2500 | |
| 1914 | Embossed white serial on red plate; "IDAHO 1914" at right | none | 1234 | 1 to approximately 3500 | |
| 1915 | Embossed red serial on white plate; "IDAHO 1915" at right | none | 1234 | 1 to approximately 8000 | |
| 1916 | Embossed black serial on yellow plate; "IDAHO 1916" at right | none | 12345 | 1 to approximately 13000 | |
| 1917 | Embossed yellow serial on black plate; "IDAHO 1917" at right | none | 12345 | 1 to approximately 25000 | |
| 1918 | Embossed white serial on brown plate; "IDAHO 1918" at right | none | 12345 | 1 to approximately 35000 | |
| 1919 | Embossed yellow serial on dark green plate; "IDAHO 1919" at right | none | 12345 | 1 to approximately 40000 | |
| 1919 | As above, but with "IDA 1919" at right | none | 12345 | 40001 to approximately 43000 | |
| 1920 | Embossed white serial on dark blue plate with border line; "IDA 1920" at right | none | 12345 | 1 to approximately 55000 | |
| 1921 | Embossed black serial on orange plate; black lines at top and bottom borders; "IDAHO 1921" at right | none | 12345 | 1 to approximately 65000 | |
| 1922 | Embossed orange serial on black plate; orange lines at top and bottom borders; "IDA 1922" at right | none | 12-345 | 1 to approximately 60-000 | |
| 1923 | Embossed orange serial on silver plate with border line; "IDA 1923" at right | none | 12-345 | 1 to approximately 62-000 | |
| 1924 | Embossed black serial on yellow plate; "IDA X-24" at right | none | 12-345 | 1 to 60-000; 70-001 to approximately 72-000 | Serials 60-001 through 70-000 reserved for trucks. |
| 1925 | Embossed black serial on white plate with border line; "IDAHO X-25" at bottom | none | 12-345 | 1 to approximately 74-000 | |
| 1926 | Embossed black serial on orange plate with border line; "IDAHO X-26" at bottom | none | 12-345 | 1 to approximately 87-000 | |
| 1927 | Embossed orange serial on dark blue plate, "IDAHO–27" at bottom | none | 12-345 | 1 to approximately 95-000 | |
| 1928 | Debossed green serial within embossed tan potato graphic on green plate with border line; "1928" at bottom right | "IDAHO POTATOES" at bottom, offset to left | 12-345 | 1 to approximately 99-999 | |
| 1929 | Embossed golden yellow serial on black plate with border line; "IDAHO - 1929" at bottom | none | 123-456 | 1 to approximately 120-000 | |
| 1930 | Embossed black serial on golden yellow plate with border line; "1930 - IDAHO" at bottom | none | 123-456 | 1 to approximately 112-000 | |
| 1931 | Embossed white serial on black plate with border line; "IDAHO – 1931" at top | none | 123-456 | 1 to approximately 115-000 | |
| 1932 | Embossed black serial on orange plate with border line; vertical "IDA" at right and "1932" centered at top | none | A/1 1-234 | Coded by county of issuance (A/1) | |
| 1933 | Embossed orange serial on black plate; "19 - IDAHO - 33" at bottom | none | 1A-12-34 | Coded by county of issuance (1A) | |
| 1934 | Embossed black serial on golden yellow plate; "19 - IDAHO - 34" at bottom | none | 1A-12-345 | Coded by county of issuance (1A) | |
| 1935 | Embossed golden yellow serial on black plate; "19 - IDAHO - 35" at top | none | 1A-12-345 | Coded by county of issuance (1A) | |
| 1936 | Embossed black serial on golden yellow plate; "19 - IDAHO - 36" at bottom | none | 1A-12-345 | Coded by county of issuance (1A) | |
| 1937 | Embossed black serial on silver plate with border line; "IDAHO - 1937" at bottom | none | 1A-12-345 | Coded by county of issuance (1A) | |
| 1938 | Embossed white serial on maroon plate with border line; "IDAHO - 1938" at bottom | none | 1A-12-345 | Coded by county of issuance (1A) | |
| 1939 | Embossed yellow serial on blue plate; "IDAHO - 1939" at bottom | none | 1A-12-345 | Coded by county of issuance (1A) | |
| 1940 | Embossed green serial on gold plate; "1890 IDAHO 1940" centered at bottom | "50 YEARS STATEHOOD" centered at top | 1A-12-345 | Coded by county of issuance (1A) | |
| 1941 | Embossed black serial on yellow plate; "1941" at bottom right | "SCENIC IDAHO" at bottom, offset to left | 1A-12-345 | Coded by county of issuance (1A) | |
| 1942–44 | Embossed dark blue serial on white plate; "42" at bottom right | "SCENIC IDAHO" at bottom, offset to left | 1A-12-345 | Coded by county of issuance (1A) | Revalidated for 1943 and 1944 with windshield stickers, due to metal conservation for World War II. |
| 1945 | Embossed black serial on golden yellow plate with border line; "45" at bottom right | "SCENIC IDAHO" at bottom, offset to left | A-12-34 0A-12-345 | Coded by county of issuance (A or 0A) | Current county-coding system introduced. |
| 1946 | Embossed white serial on black plate with border line; "46" at bottom right | "SCENIC IDAHO" at bottom, offset to left | A-12-34 0A-12-345 | Coded by county of issuance (A or 0A) | |
| 1947 | Embossed white serial on dark blue plate with border line; embossed graphic in the center featuring a skier and mountains; "19 IDAHO 47" centered at top | "Vacation Wonderland" centered at bottom | A 1234 0/A 12345 | Coded by county of issuance (A or 0/A) | |
| 1948–49 | Embossed black serial on silver plate; baked potato sticker in the center; "IDAHO 48" centered at top | "World Famous POTATOES" centered at bottom | A 1234 0/A 12345 | Coded by county of issuance (A or 0/A) | Revalidated for 1949 with silver tabs. |
| 1950 | Embossed white serial on black plate with border line; "IDAHO 50" centered at top | none | A 1234 0/A 12345 | Coded by county of issuance (A or 0/A) | |
| 1951–52 | Embossed white serial on maroon plate with border line; "IDAHO 51" centered at top | none | A 12345 0/A 12345 | Coded by county of issuance (A or 0/A) | Revalidated for 1952 with silver tabs. |
| 1953 | Embossed white serial on black plate with border line; "IDAHO 53" centered at top | "WORLD FAMOUS POTATO" at bottom | A 12345 0/A 12345 | Coded by county of issuance (A or 0/A) | |
| 1954 | Embossed black serial on white plate with border line; "IDAHO 54" centered at bottom | none | A 12345 0/A 12345 | Coded by county of issuance (A or 0/A) | |
| 1955 | Embossed white serial on black plate with border line; "IDAHO 55" centered at bottom | none | A 12345 0/A 12345 | Coded by county of issuance (A or 0/A) | |
| 1956 | Embossed black serial on white plate with border line; "IDAHO 56" centered at top | "WORLD FAMOUS POTATO" at bottom | A 12345 0/A 12345 | Coded by county of issuance (A or 0/A) | |
| 1957 | Embossed white serial on light green plate with border line; "IDAHO 57" centered at top | "FAMOUS POTATOES" centered at bottom | A 12345 0/A 12345 | Coded by county of issuance (A or 0/A) | |
| 1958 | Embossed dark green serial on white plate with border line; "IDAHO 58" centered at top | "FAMOUS POTATOES" centered at bottom | A 12345 0/A 12345 | Coded by county of issuance (A or 0/A) | |
| 1959 | Embossed white serial on dark green plate with border line; "IDAHO 59" centered at top | "FAMOUS POTATOES" centered at bottom | A 12345 0/A 12345 | Coded by county of issuance (A or 0/A) | |
| 1960 | As 1958 base, but with "IDAHO 60" at top | "FAMOUS POTATOES" as on 1958 base | A 12345 0/A 12345 | Coded by county of issuance (A or 0/A) | |
| 1961 | As 1959 base, but with "IDAHO 61" at top | "FAMOUS POTATOES" as on 1959 base | A 12345 0/A 12345 | Coded by county of issuance (A or 0/A) | |
| 1962 | As 1958 base, but with "IDAHO 62" at top | "FAMOUS POTATOES" as on 1958 base | A 12345 0/A 12345 | Coded by county of issuance (A or 0/A) | |
| 1963 | As 1959 base, but with "IDAHO 63" at top | "FAMOUS POTATOES" as on 1959 base | A 12345 0/A 12345 | Coded by county of issuance (A or 0/A) | |
| 1964 | As 1958 base, but with "IDAHO 64" at top | "FAMOUS POTATOES" as on 1958 base | A 12345 0/A 12345 | Coded by county of issuance (A or 0/A) | |
| 1965 | As 1959 base, but with "IDAHO 65" at top | "FAMOUS POTATOES" as on 1959 base | A 12345 0/A 12345 | Coded by county of issuance (A or 0/A) | |
| 1966 | As 1958 base, but with "IDAHO 66" at top | "FAMOUS POTATOES" as on 1958 base | A 12345 0/A 12345 | Coded by county of issuance (A or 0/A) | |
| 1967 | As 1959 base, but with "IDAHO 67" at top | "FAMOUS POTATOES" as on 1959 base | A 12345 0/A 12345 | Coded by county of issuance (A or 0/A) | |

### 1968 to present

| Dates issued | Design | Slogan | Serial format | Serials issued | Notes |
| 1968–70 | Embossed green serial on white plate with border line; "IDAHO 68" centered at top | "FAMOUS POTATOES" centered at bottom | A 12345 0/A 12345 1/A A1234 | Coded by county of issuance (A or 0/A) | |
| 1971–73 | As above, but with simply "IDAHO" centered at top | "FAMOUS POTATOES" centered at bottom | A 12345 0/A 12345 1/A A1234 | Coded by county of issuance (A or 0/A) | |
| 1974 | Embossed green serial on white plate with border line; "IDAHO 74" centered at top | "FAMOUS POTATOES" centered at bottom | A 12345 K A1234 0/A 12345 0/A A1234 1/A AB123 | Coded by county of issuance (A or 0/A) | |
| 1975–82 | As above, but with simply "IDAHO" centered at top | "FAMOUS POTATOES" centered at bottom | A 12345 K A1234 0/A 12345 0/A A1234 1/A AB123 | Coded by county of issuance (A or 0/A) | |
| 1982–85 | Embossed green serial on white plate; "IDAHO" screened in green centered at top, with the 'A' resembling a mountain peak | "Famous Potatoes" screened in green centered at bottom | A 12345 K A1234 0/A 12345 0/A A1234 1/A AB123 | Coded by county of issuance (A or 0/A) | Serials in each county continued from where the 1974–82 plates left off. |
| 1985–87 | Embossed green serial on white plate; screened green lines above and below serial; screened green Sawtooth Mountains graphic on top line at the right; "IDAHO" screened in green to left of graphic, with the 'A' resembling a mountain peak | "Famous Potatoes" screened in green centered below serial, just above bottom line | A 12345 K A1234 0/A 12345 0/A A1234 1/A AB123 | Coded by county of issuance (A or 0/A) | Serials in each county continued from where the 1982–85 plates left off. |
| 1987–89 | Embossed green serial on white plate; screened green lines above and below serial; screened green Sawtooth Mountains graphic on top line at the right; "IDAHO" screened in green to left of graphic, with the 'A' resembling a mountain peak | "Famous Potatoes" screened in green centered below serial, just above bottom line | A 12345 0/A 12345 1/A A1234 2/C 123456 | Coded by county of issuance (A or 0/A) | Top line cut off at the left, allowing for taller county-code characters. This plate replaced all 1974–87 plates; serials in each county thus restarted from 1. |
| 1989 – September 1991 | Embossed green serial on white plate; screened green lines above and below serial; screened green Sawtooth Mountains graphic on top line at the right; "IDAHO" screened in green to left of graphic, with the 'A' resembling a mountain peak | "Famous Potatoes" screened in green centered below serial, just above bottom line | A 12345 0/A 12345 1/A A1234 2/C 123456 | Coded by county of issuance (A or 0/A) | Narrow serial dies introduced, allowing for six-digit serials in Canyon County. (Ada County had already gone over to one-letter, four-digit serials after reaching 99999.) |
| September 1991 – June 1997 | Embossed dark blue serial on mountain scene with red and white gradient sky, pale blue mountains and dark blue forest; tall dark blue tree screened at far right; "IDAHO" screened in white centered at top | "Scenic" screened in white to left of state name, giving "Scenic Idaho"; "FAMOUS POTATOES" screened in white centered at bottom | A 123456 0/A 123456 | Coded by county of issuance (A or 0/A) | Modification of the optional Centennial base introduced in 1987 (see Optional plates below). Awarded "Plate of the Year" for best new license plate of 1991 by the Automobile License Plate Collectors Association, the second time Idaho was so honored. |
| June 1997 – April 2008 | As above, but with tall dark blue tree removed and red section of sky reduced in height | "Scenic" screened in white to left of state name, giving "Scenic Idaho"; "FAMOUS POTATOES" screened in white centered at bottom | A 123456 0A 12345 0A A1234 0A AB123 0A 1A234 1A 1234A 1A 123AB 10B 1234 10B A123 | Coded by county of issuance (A or 0A) | Full-size county codes introduced in addition to design modifications, all for better visibility. Serials in each county continued from where the 1991–97 plates left off, but were now restricted to seven characters (including the county-code characters). |
| April 2008 – December 2020 | As above, but with screened black serial and full white border around plate | "Scenic" screened in white to left of state name, giving "Scenic Idaho"; "FAMOUS POTATOES" screened in white centered at bottom | A 123456 0A 12345 0A A1234 0A AB123 0A 1A234 1A 1234A 1A 123AB 10B 1234 10B A123 | Coded by county of issuance (A or 0A) | Serials in each county continued from where the 1997–2008 plates left off. |
| December 2020 – present | As above, but with screened black serial and full white border around plate | "Scenic" screened in white to left of state name, giving "Scenic Idaho"; "FAMOUS POTATOES" screened in white centered at bottom | A 1234U A A123U K AB12U 0A 1234U 0A A123U 0A AB12U 0A ABC1U 10B 123U 10B A12U | Coded by county of issuance (A or 0A) | New serial formats introduced in each county. Canyon county uses a P suffix instead of U as with every other county. |

## County coding

The current county-coding system on standard-issue Idaho license plates has been in use since 1945. The naming convention is the order of the county in an alphabetical list followed by the first letter of the county name. For example, 2T indicates the second county beginning with T in an alphabetical list, or Twin Falls County. If only one county begins with a particular letter, the letter alone serves as the county code. Specialty and vanity license plates do not use county codes; some non-passenger types are county-coded, while others are not.
| County | 1934–44 | 1945–present |
| Ada | 1A | 1A |
| Adams | 2A | 2A |
| Bannock | 3A | 1B |
| Bear Lake | 4A | 2B |
| Benewah | 5A | 3B |
| Bingham | 6A | 4B |
| Blaine | 7A | 5B |
| Boise | 8A | 6B |
| Bonner | 9A | 7B |
| Bonneville | 1P | 8B |
| Boundary | 2P | 9B |
| Butte | 3P | 10B |
| Camas | 4P | 1C |
| Canyon | 5P | 2C |
| Caribou | 6P | 3C |
| Cassia | 7P | 4C |
| Clark | 8P | 5C |
| Clearwater | 9P | 6C |
| Custer | 1H | 7C |
| Elmore | 2H | E |
| Franklin | 3H | 1F |
| Fremont | 4H | 2F |
| Gem | 5H | 1G |
| Gooding | 6H | 2G |
| Idaho | 7H | I |
| Jefferson | 8H | 1J |
| Jerome | 9H | 2J |
| Kootenai | 1K | K |
| Latah | 2K | 1L |
| Lemhi | 3K | 2L |
| Lewis | 4K | 3L |
| Lincoln | 5K | 4L |
| Madison | 6K | 1M |
| Minidoka | 7K | 2M |
| Nez Perce | 8K | N |
| Oneida | 9K | 1O |
| Owyhee | 1R | 2O |
| Payette | 2R | 1P |
| Power | 3R | 2P |
| Shoshone | 4R | S |
| Teton | 5R | 1T |
| Twin Falls | 6R | 2T |
| Valley | 7R | V |
| Washington | 8R | W |

## Non-passenger plates

| Type | Serial format | Serials issued | Notes |
| Apportioned Tractor | P/R/P AB 1234 | P/R/P AA 1 to present | |
| Apportioned Trailer | P/R/P CB 1234 | P/R/P CA 1 to present | |
| Apportioned Truck | P/R/P BB 1234 | P/R/P BA 1 to present | |
| Classic | 1234 | | Serials became screened by 9991. |
| Commercial | KB 1234 | KA 1 to KZ 9999 | Serials became screened around KL 5000. |
| Commercial | KZ 12345 | KZ 10000 to approximately KZ 26000 | Serials became screened around KL 5000. |
| Commercial | KB C123 | KA A001 to present | Serials became screened around KL 5000. |
| Dealer | D/L/R 1234-56 | | |
| Disabled Person | DB 123 | DA 001 to DZ 999 | Serials became screened between DR 451 and DU 201. DV series reserved for Disabled Veteran plates. |
| Disabled Person | DBC 12 | DAA 01 to present | Serials became screened between DR 451 and DU 201. DV series reserved for Disabled Veteran plates. |
| Fleet | FL12345 | FL00001 to present | |
| Motorcycle | MBC 123 | MAA 1 to MZZ 999 | Serials became screened between MPE 289 and MPH 714. |
| Motorcycle | M12 345 | M10 000 to present | Serials became screened between MPE 289 and MPH 714. |
| Old Timer | 12 | | |
| Street Rod | 123A | | |
| Truck | A 12345T A A1234T 0A 1234T 0A A123T | Coded by county of issuance (A or 0A) | |
| Utility Trailer | 123 UBC | 1 UAA to 999 UZZ | Motorcycle-sized plate. |
| Utility Trailer | ZBC 123 | ZAA 1 to present | Motorcycle-sized plate. |

## Government types

| Type | Serial format | Serials issued | Notes |
| Ada County Sheriff | AC123 | AC1 to present | At least some plates issued on "Celebrate Idaho Youth: America's Promise" base. |
| Department of Building Safety | DBS 123 | DBS 1 to present | |
| Department of Labor | J 12 | J 1 to present | |
| Fire Department | F 1 | F 1 to present | |
| Gem County Sheriff | GCS 123 | GCS 1 to present | |
| Idaho State Police | ISP 123 | ISP 1 to present | |

## Optional plates

| Type | First issued | Design | Serial format | Serials issued | Notes |
| Idaho Centennial | 1987 | Embossed dark blue serial on mountain scene with red and white gradient sky, pale blue mountains and dark blue forest; two tall dark blue trees screened at far left; "IDAHO" and "CENTENNIAL" screened in white centered at top and bottom respectively; "1890" at top left and "1990" at top right | 12345C | 1C to 99999C | Awarded "Plate of the Year" for best new license plate of 1987 by the Automobile License Plate Collectors Association, the first time Idaho was so honored. Adopted as standard passenger base from 1991 onwards (see above). Since the introduction of this design, the plate has been colloquially referred to by Idahoans as the "nuclear winter" plate. It remains so to this day (with the most recent 2008 design retaining the characteristic features). |
| Idaho Centennial | 1987 | Embossed dark blue serial on mountain scene with red and white gradient sky, pale blue mountains and dark blue forest; two tall dark blue trees screened at far left; "IDAHO" and "CENTENNIAL" screened in white centered at top and bottom respectively; "1890" at top left and "1990" at top right | C12345 | C1 to approximately C78000 | Awarded "Plate of the Year" for best new license plate of 1987 by the Automobile License Plate Collectors Association, the first time Idaho was so honored. Adopted as standard passenger base from 1991 onwards (see above). Since the introduction of this design, the plate has been colloquially referred to by Idahoans as the "nuclear winter" plate. It remains so to this day (with the most recent 2008 design retaining the characteristic features). |
| Idaho Centennial | 1992 | Embossed dark blue serial on mountain scene with red and white gradient sky, pale blue mountains and dark blue forest; two tall dark blue trees screened at far left; "IDAHO" and "CENTENNIAL" screened in white centered at top and bottom respectively; "1890" at top left and "1990" at top right | 123 ABC | 100 AAA to present | Awarded "Plate of the Year" for best new license plate of 1987 by the Automobile License Plate Collectors Association, the first time Idaho was so honored. Adopted as standard passenger base from 1991 onwards (see above). Since the introduction of this design, the plate has been colloquially referred to by Idahoans as the "nuclear winter" plate. It remains so to this day (with the most recent 2008 design retaining the characteristic features). |
| Agriculture | | As current passenger base, but with farm scene graphic screened at left featuring a red farmhouse, a silver silo and white clouds, and "AGRICULTURE" centered at bottom | 1234A | 1A to present | |
| Appaloosa | 2003 | As current passenger base, but with Appaloosa horse graphic screened at left, "Discover Idaho Heritage" at top, and "APPALOOSA" at bottom | 1234B | 1B to present | |
| Capitol Restoration | | | 1234R | 1R to present | |
| Celebrate Idaho Youth: America's Promise | | | 1234Y | 1Y to present | |
| Colleges and Universities | | | 1234S 12SAS 1AB2S | 1S to 9999S ? ? | Idaho State University redesigned at least by transition to surface-printed serials. |
| Corvette | | As current passenger base, but with Corvette logo screened at left, "Drive Idaho" at top, and "America's Sports Car" centered at bottom | 1234M | 1M to present | |
| Elks USA | c. 2009 | | unknown | unknown | |
| Fire Fighters | | As current passenger base, but with graphic screened at left featuring two firefighters and flames, and "FIRE FIGHTERS" centered at bottom | 1234X | 1X to present | |
| Forests Today and Tomorrow | | | 1234F | 1F to present | |
| Idaho Aviation | 2012 | As current passenger base, but with yellow airplane graphic screened at left, "Fly Idaho" at top, and "A PILOT'S PARADISE" centered at bottom | 12345I | 00001I to present | |
| Idaho Biking: Preserve Our Trails | | As current passenger base, but with mountain biker graphic screened at left, "Biking" to right of state name, and "PRESERVE OUR TRAILS" centered at bottom | 12345F | 00001F to present | |
| Ideas. Innovations. Idaho. | | As current passenger base, but with light bulb graphic screened at left, with a yellow state shape as its filament, and "IDEAS. INNOVATIONS. IDAHO." centered at bottom | U1234 | U0001 to present | |
| Lewis & Clark | | As current passenger base, but with graphic of a pointing Native American Indian woman screened at left, "Discover Idaho" at top, and "1803 LEWIS & CLARK 1806" centered at bottom | 1234L | 1L to present | |
| Mining: Yesterday, Today, Tomorrow | c. 2009 | | 12345C | 00001C to present | |
| National Guard | | | 1234G | 1G to present | |
| On the Range | c. 2009 | | 12345B | 00001B to present | |
| Peace Officer | | As current passenger base, but with the logo of the Idaho Peace Officers' Memorial screened at left and "Honoring our Peace Officers" centered at bottom | 1234J | 1J to present | |
| Pet Friendly | July 1, 2019 | As current passenger base, but with dog and cat graphic screened at left and "PET FRIENDLY", with a heart on either side, centered at bottom | PF123 | PF001 to present | |
| Purple Heart | | | 1234H | 1H to present | |
| Radio Amateur | | As current passenger base, but with "RADIO AMATEUR" centered at bottom | FCC call sign | various | |
| Rotary | | As current passenger base, but with black Rotary logo screened at left and "Service Above Self" centered at bottom | RI123 | RI001 to present | |
| Sawtooth National Recreation Area | | As current passenger base, but with graphic screened at left featuring a white mountain goat against a purple mountain and a white sun, and "Sawtooth National Recreation Area" centered at bottom | 1234Z | 1Z to present | |
| Scenic Idaho: Wild Rivers | | | 1234U | 1U to present | |
| Ski Idaho: Winter Wonderland | | As current passenger base, but with skier graphic screened at left, "Ski" to left of state name, and "WINTER WONDERLAND" at bottom | 1234K | 1K to 9999K | |
| Ski Idaho: Winter Wonderland | | As current passenger base, but with skier graphic screened at left, "Ski" to left of state name, and "WINTER WONDERLAND" at bottom | 123AK | 1AK to present | |
| Snowmobile: World's Best Trails | | | 1234N | 1N to present | |
| Special Olympics | June 2008 | As current passenger base, but with the logo of the 2009 Special Olympics World Winter Games screened at left and "SPECIAL OLYMPICS" centered at bottom | unknown | unknown | |
| Support Our Troops | | | 12345S | 00001S to present | |
| Supporting Rider Education | | As current passenger base, but with the logo of the Idaho STAR Motorcycle Safety Program, featuring three motorcyclists, screened at left and "Supporting Rider Education" centered at bottom | 1234P | 1P to present | |
| The Gem State | | As current passenger base, but with graphic screened at left consisting of a diamond, two quartz crystals and a star garnet, and "THE GEM STATE" centered at bottom | 12345E | 00001E to present | |
| Timeless Idaho Values: Boy Scouts | | | 1234I | 1I to present | |
| Veteran | | | 1234V | 1V to present | |
| Wilderness - Frank Church: River of No Return and Selway-Bitterroot | | | | | |
| Wildlife – bluebird | | | 12345 | 1 to present | |
| Wildlife – cutthroat | 2003 | | 1234D | 1D to 9999D | |
| Wildlife – cutthroat | 2003 | | 123AD | 1AD to present | |
| Wildlife – elk | 1998 redesigned c. 2008 | | 1234E | 1E to 9999E | Awarded "Plate of the Year" for best new optional license plate of 1998 by the Automobile License Plate Collectors Association, the third time Idaho was so honored. Co-recipient with Alaska. |
| Wildlife – elk | 1998 redesigned c. 2008 | | 123AE | 1AE to 999ZE | Awarded "Plate of the Year" for best new optional license plate of 1998 by the Automobile License Plate Collectors Association, the third time Idaho was so honored. Co-recipient with Alaska. |
| Wildlife – elk | 1998 redesigned c. 2008 | | 12ABE | 1AAE to 99ZZE | Awarded "Plate of the Year" for best new optional license plate of 1998 by the Automobile License Plate Collectors Association, the third time Idaho was so honored. Co-recipient with Alaska. |
| Wildlife – elk | 1998 redesigned c. 2008 | | 12A3E | 1A0E to present | Awarded "Plate of the Year" for best new optional license plate of 1998 by the Automobile License Plate Collectors Association, the third time Idaho was so honored. Co-recipient with Alaska. |
| World Famous Potatoes | | As current passenger base, but with baked potato graphic screened at left, "World" and "Famous" on either side of the state name, and "Potatoes" centered at bottom | 1234T | 1T to present | |

### Discontinued

| Type | Dates issued | Design | Serial format | Serials issued |
| Basque | 2006 – June 30, 2011 | As current passenger base, but with green and white sheep wagon graphic screened at left and "BASQUE" centered at bottom | B1234 | B0001 to ? |
| Breast Cancer | c. 2009–12 | As current passenger base, but with pink ribbon graphic screened at left and "EARLY DETECTION SAVES LIVES" centered at bottom | unknown | unknown |
| Historic Idaho: Preserve Our Heritage | ? to 2012 | As current passenger base, but with graphic of a wooden house and trees screened at left, "Historic" to left of state name, and "PRESERVE OUR HERITAGE" centered at bottom | JA123 | |
| National Rifle Association | c. 2009–12 | | unknown | unknown |