IDAHO
Truck began 1924. Truck registration figures begin 1921, so highest
passenger number blocks may have been reserved for trucks 1921-23.
Issuance by county began 1926, with 84,000 in initial assignment.
When 1944 windshield sticker pairs were issued, 1942 plates were to
be removed from vehicles.
PASSENGER
1913 113- - 2301*
1914 1 - 3355* (4,000 ordered, #3744 final issued)
1915 1 - 7546*
1916 1 - 12882
1917 1 - 24655
1918 1 - 34829*
1919 1 - 42498*
1920 1 - 54828* TRUCK
1921 1 - 64799*
1922 1 - 59-818*
1923 1 - 61-914 (62-078 replacement)
1924 X 1 - 60-000 T 60-001 - 67-775*
X 70-001 - 72-000 (71-771* seen)
1925 X 1 - 73-257 T 80-001 - 86-752
1926 X 1 - 86-908* T 90-001 - 98-204
1927 1 - 94-768* (Became separate series)
1928 1 - 99-977*
1929 1 - 120-000*
1930 1 - 111-443*
1931 1 - 114-791* (123 became A/1 123 in 1932)
1932-42 FORMATS County codes on County Code page.
1932 A/1 1 - A/9 9-999 Only A,B*,H,K,R used.
(A/1 11-000 allocated in Ada; none seen)
1933-42 1A-1 - 9A-999, *P replaced B in 1934-42.
1A-10-00 - 9A-99-99 S = Exempt 1932-33 only.
HIGHEST 7-FIGURE NUMBER EXPECTED BY REGISTRATIONS 1934-46:
(*or observed number if higher, and all 1942-43)
YEAR ADA BANNOCK CANYON TWIN FALLS TOTAL
1932 [1A-11-000] [1,001 P]
1933
1934+ 1A-10-025 26 P
1935 1A-11-235 1,236 P
1936+ 1A-12-290* 2,291 P
1937 1A-13-518* (5P-97-53) (6R-97-24) 3,519 P
1938+ 1A-12-430* 5P-11-556* 6R-10-894* 4,883 P
1939 1A-13-814 (3A-79-96*) 5P-11-111* 6R-10-375* 5,303 P
1940= 1A-14-668* 3A-10-095* 5P-11-997* 6R-10-747* 7,511 P
1941 1A-15-995 (3A-86-37) 5P-11-707 6R-10-957 8,662 P
1942-43 1A-20-697 3A-10-461 5P-11-666 6R-11-198 14,026 P
1945 1A-13-896* (1B-80-53) 2C-10-769 (2T-89-35) 4,667 S
1946# 1A-15-366* (1B-79-56) 2C-12-272* 2T-10-165* 7,806 S
+as of 9/30 =as of 10/31 #as of 6/30
1945-46 FORMATS County codes 1945-present on County Code page.
1A-1 - 1A-999, 1A-10-00 - 1A-99-99 (A,B,C,F,G,J,L,M,P,T used)
10B-1 - 10B-999
E-1 - E-999, E-10-00 - E-99-99 (E,I,K,N,S,V,W used)
1-O-1 - 2-O-999, 2-O-10-00 - 2-O-99-99
HIGHEST 1-O - 2-O NUMBER EXPECTED BY REGISTRATIONS 1945-47:
YEAR ONEIDA OWYHEE
1945 1-O-939 2-O-11-77
1946# 1-O-959 2-O-11-23 (#as of 6/30/46)
1947 1/O 1 162 2/O 1 440 (2/O 1 580* seen)
1947-67 FORMATS Pickup trucks registered as passenger
1/A 1 - 1/A 99 999 starting 1964, resulting in large increase.
10/B 1 - 10/B 999
/E 1 - /E 9 999 (Vertically centered 1947 only)
1951 10/B 1 000 added 1949 TAB 004122 - 277855*t
1952 /K 10 000 added (M/C, TR 328935 - 359721)
1952 TAB 000782 - 237971*
1968-73 BASE Replaced during 1973.
1968 1/A 1 - 1/A 99 999
10/B 1 - 10/B 9 999
/E 1 - /E 99 999
OVERFLOW SERIES:
Ada 1971 6 "72" 1/A A 1 - 1/A C 7918 (27,916 P)
1974-87 BASE Replaced during 1987.
1973 1/A 1 - 1/A 99 999
10/B 1 - 10/B 9 999
/E 1 - /E 99 999
1986 "6-87" 10/B 10 000 - 10/B 11 223 added
OVERFLOW SERIES: No I,O,Q used in serial.
Ada 1974 6 "75" 1/A A 1 - 1/A Z9 999 (229,977 P)
1983 7 "84" 1/A AA 1 - 1/A EX 662 (112,550 P)
Bannock 1980 7 "81" 1/B A 1 - 1/B H 3472 (73,465 P)
Bonneville 1981 4 "82" 8/B A 1 - 8/B H 1848 (71,841 P)
Canyon 1979 10"80" 2/C A 1 - 2/C L 5422 (105,412 P)
Kootenai 1981 "82" /K A 1 - /K H 0439 (70,432 P)
Twin Falls 1981 "82" 2/T A 1 - 2/T C6 191 (26,189 P)
1/B H 0687, 8/B H0 652, /K G0 022 leading zeroes, /K E 864 not.
1987-92 BASE Replaced during 1992.
12-1-86 "12 87" 1/A 1 - 1/A 99 999
10/B 1 - 10/B 9 999
/E 1 - /E 99 999
OVERFLOW SERIES: No I used.
Ada 1987 1/A A 1 - 1/A N 9911 (129,899 P)
Canyon 1991 "11 91" 2/C 100 000 - 2/C 114 125 (14,126 P)
1992-98 SCENIC BASE
Sep.91 "4-92" 1/A 1 - 1/A 9999, 1/A 10 000 - 1/A 999 999
10/B 1 - 10/B 9999
/E 1 - /E 9999, /E 10 000 - /E 999 999
COUNTIES REACHING 6 DIGITS:
Ada 1/A 312 404
Bonneville 8/B 119 806
Canyon 2/C 156 323
Kootenai /K 146 001
1998-2024 NEW SCENIC BASE
Jun.97 "3-98" 1A 1 - 1A 99999, 1A A0001 - 1A Z9999
10B 1001 - 10B 9999
E 1 - E 999999
Redesigned with no tree at right.
Numbering continued from 1992-97; Teton began at 1T 9001.
Period to reserve previous number: 8/3/1998 - 10/2/1998 ($2 fee)
Period to request dormant number, expired over one year:
10/5/1998 - 11/13/1998 ($2 fee)
$6 new plate fee charged since at least 1980, raised to $7.50 in 2020.
Plates replaced upon 7 years of use, changed to 10 years in 2020.
OVERFLOW SERIES ADDED: No I,O,Q used.
ADA COUNTY BUTTE COUNTY
5/17/02 1A AA001 - 1A ZZ999
9/ 1/10 "09 11" 1A 1A001 - 1A 9Z999 (1A-9A, 1B, etc.)
"07-13" 10B A001 - 10B Z999
3/ 8/14 "05-15" 1A 0001A - 1A 9999Z (no M,R,T)
7/13/17 "08-18" 1A 001AZ - 1A 999ZZ
"09-18" 1A 001AA - 1A 140PK (no Y)
As of 12/25/2020, all old formats were stopped once existing stocks
were depleted, and a new system begun. All counties issued 0001U -
9999U except Ada A001U - Z999U (including I) and Butte 001U - 999U.
As of 4/24/2021 "05-22" Ada continued to AA01U - ZZ99U. As series
finished, other counties followed suit.
1987-96 OPTIONAL BASES:
1987-2024 CENTENNIAL BASE Extra fee $25 inital, $15 renewal.
1-2-87 "12-87" Type 1: Wide dies 1C - 99999C (99,999 P)
Jan.88 "1-89" Type 1a C1 - C26458 (26,458 P)
1-1-89 "5-90" Type 2: Thin dies C 27 568 - C 77 577 (50,010 P)
Dec.91 "4-92" Type 2a 100 AAA - 319 ACV (56,920 P)
(TOTAL 234,496 P)
No I,O,Q used. ABM omitted.
Close spacing 523ABG, wide spacing 124 ABR.
Types 1, 1a and 2 replaced by Type 2a during 1992.
1994-2024 WILDLIFE BASE Extra fee $35 initial, $25 renewal.
7-1-93 "7-94" 1 - 39186 (39,186 P)
OTHER OPTIONAL BASES Assuming no I,O,Q used.
(Using Elk as example) 1E - 9999E (9,999 P)
1AE - 999ZE (22,977 P)
1AAE - 99ZZE (52,371 P)
10A0E - 10V9E (16,210 P)
(TOTAL ELK 101,557 P)
