The U.S. state of Illinois first required its residents to register their motor vehicles in 1907. Registrants provided their own license plates for display until 1911, when the state began to issue plates. , plates are issued by the Illinois Secretary of State.
Front and rear plates are required on most vehicle types, with the exception of motorcycles, motor-driven cycles, and trailers. Plates were issued annually until 1979; multi-year plates have been issued ever since. Plates belong to vehicle owners, so they can be transferred from one vehicle to another.
Early history: 1907–1939 Automobile owners in Illinois were first required to register their vehicles with the Secretary of State's office in 1907, paying a one-time registration fee of $2. Registrants were issued a numbered aluminum disc to place on their dashboard, but they had to provide their own license plates. Annual registration commenced in 1909.
The state began to issue license plates in 1911. Front and rear plates were required each year, along with an aluminum dashboard disc whose number matched the serial on the plate. The legislation authorizing the state issuance of license plates also provided for the registration and plating of motorcycles, and issued special licenses and plates to mechanics and chauffeurs.
Serials were all-numeric and originally ran to five digits. When 99999 was reached in 1914 and 1915, serials with one letter and four digits were issued. Six-digit all-numeric serials were introduced in 1916, followed in 1925 by seven-digit serials. Aluminum dashboard discs were discontinued after 1917.
Trucks received their own plates for the first time in 1920. Serials on these plates were all-numeric until 1930, when weight codes were introduced. Trailers received their own plates from 1924 onwards.
In 1927, the state issued its first graphic license plate, featuring an embossed state shape to the right of the serial.
Mid-century history: 1940–1978 With the entry of the United States into World War II, and the subsequent introduction of measures to conserve metal for the war effort, Illinois manufactured its license plates for 1943 from wood-based fiberboard instead of steel. This practice continued each year up to and including 1948, despite the war ending in 1945 with the surrender of Japan. The state reverted to manufacturing its plates from steel in 1949, although the 1950 and 1951 plates were instead manufactured from aluminum.
License plates were placed under the jurisdiction of the Secretary of State in 1953. The 1954 plates were the first to feature the "Land of Lincoln" slogan, which continues to be used today.
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. The 1956 (dated 1957) issue was the first Illinois license plate that fully complied with these standards: the 1955 (dated 1956) issue was 6 inches in height by 12 inches in width, but had non-standard mounting holes.
Multiyear baseplates: 1979–present In late 1966 the implementation of five year license plates, which would use renewal tabs annually, was proposed. Their use would also aid police in identifying drivers because the books that listed all license plate numbers were not available until halfway through the year. With fewer plate numbers changing, the books would be relevant for longer periods of time. Paul Powell, the Illinois Secretary of State, rejected the proposal stating that any cost savings would be minimized by additional record keeping costs. He also mentioned that some multiyear plates used in other states were not satisfactory. Powell further reiterated his position the following month by mentioning a University of Illinois study which recommended the annual change in license plate colors as an incentive for motorists to pay the annual registration cost, and that the initial cost of the longer term plates would be much more than regular plates. The University of Illinois study mentioned by Powell was conducted in 1957 and 1958, and also recommended the addition of letters to the Illinois license plate. In 1969 Powell backed a plan to implement two-year plates, which would have cost twice the annual registration price, but the plan did not pass the legislature.
In January 1975 it was recommended that Illinois retain the practice of issuing annual license plates by an advisory committee to Secretary of State Michael Howlett. Two year license plates and a staggered registration system were studied by the committee, but both proposals were rejected. Despite this recommendation Howlett appointed a task force in April 1975 to study how to implement multiyear plates. At the conclusion of the study in September 1975 Howlett stated he would propose to the legislature that Illinois begin issuing multiyear plates validated by an annual renewal sticker. The plates were expected to last five years, and they were to be made of aluminum stock that was twice as thick as the current plates in order to make them more durable. With the 1976 license plates already in production, and the 1977 license plate contract already awarded, the implementation of a multiyear license plate system was delayed.
Issue of 1979 Legislation to implement a multiyear license plate was finally proposed in 1977. The bill to institute five-year plates passed the House Motor Vehicle Committee on March 16, 1977, and the state House on March 29, 1977. Alan Dixon, the Secretary of State, spoke in favor of passage of the bill. The Senate Transportation Committee passed the bill on April 28, 1977, and the full Senate on June 10, 1977. The bill was signed into law by Governor Jim Thompson on August 4, 1977. With the 1978 contract for license plates already awarded, multiyear plates would not be implemented until 1979. The cost savings from not issuing annual plates for the expected five year life of the plates was $21 million. One change made to the legislation before becoming a law gave the Secretary of State the discretion to determine how long the plates would last. This change would have long-term implications as there was not a statutory requirement to issue new license plates every five years.
The 1979 issue of new license plates was complicated by the fact that the state was converting to a staggered registration system at the same time it issued these plates. Under the multiyear system vehicle owners could obtain their new plates and register their vehicles for as few as nine months or as long as 23 months. At this time a full year registration cost $18, so the registration cost was prorated to the number of months that was chosen. A nine-month registration was $13.50 while a 23-month registration cost $34.50. Initially the month that a registration would expire was based upon the last two digits of a license plate number. For instance a plate ending in the number 11 allowed the vehicle owner to register for nine months ending on September 30, 1979, or they could choose an April 30, 1980 expiration. By limiting the choices for expiration to only two different months, the state ensured that registrations would be staggered.
Renewal stickers for the 1979 license plates were blue for 1979, red for 1980, green for 1981, brown for 1982, and orange for 1983.
The multiyear system also eliminated the need for current vehicle owners to replace license plates during the winter months as no registrations were set to expire in December, January, or February. Anyone who purchased a new or used vehicle in the winter months could still end up with license plates that needed to be renewed while it was cold outside. Many other types of vehicles, such as taxis, limousines, dealers, etc. continued to be issued a new plate annually.
Issue of 1984 A new multi-year plate was introduced in 1984, replacing all the 1979 plates by the start of 1987. This plate consisted of embossed dark blue characters on a reflective white background, with a light blue band screened across the top containing the state name and the "Land of Lincoln" slogan. Serials on passenger plates issued to new registrants initially consisted of three letters and three numbers, while existing registrants with 1979 plates could retain the all-numeric and two-letter, four-number serials from these plates. After the three-letter, three-number format was completed in 1995, new formats were used consisting of one letter and up to six numbers.
Renewal stickers for these plates were as follows: purple for 1984, green for 1985, orange for 1986, blue for 1987, red for 1988, green for 1989, orange for 1990, maroon for 1991, white for 1992, blue for 1993, dark gray for 1994, red for 1995, white for 1996, green for 1997, gray for 1998, orange for 1999, blue for 2000 and finally red for 2001.
Issue of 2001 The new multiyear baseplate, which began to be issued in July 2001, was the first fully graphic passenger plate issued by the state of Illinois. The design, dark red characters on a background that faded from white at the top to dark blue at the bottom, was chosen by Internet voters from among nine different designs. The word "Illinois" was centered in a script font at the top, the "Land of Lincoln" slogan was once more centered at the bottom of the plate, and a single sticker well, half the size of the former well, was at the top right corner. In the center of the plate was a silhouette of Abraham Lincoln. Approximately 8.5 million passenger plates were scheduled to be replaced in a single year although replacement plates for all vehicle types was scheduled to take place over three years. Approximately 6.5 million passenger plates were made in Illinois at Macon County Rehabilitation Facilities, Inc. in Decatur, and another 2 million plates were made by Waldale Manufacturing Ltd. of Amherst, Nova Scotia, Canada in order to produce all of the passenger plates needed in a single year.
Issue of 2017 On November 15, 2016, Illinois Secretary of State Jesse White announced that new Illinois license plates would begin to be issued in 2017. As before, the new license plates were announced in conjunction with a multiyear replacement program. The largest change to the plate was the complete replacement of the background image. The image of Abraham Lincoln was moved to the far left, was changed to a dark gray color, only showed the left half of his face, and was nearly the entire height of the plate. Additionally, the rest of the background showed a blue sky above a partial Chicago skyline including the Willis Tower (formerly Sears Tower); a barn with a windpump; and the dome of the Illinois State Capitol building; all of which are all in white. The serial number characters remained in dark red, and the word "Illinois" along with the "Land of Lincoln" slogan were changed to a black seriffed font. The replating program is scheduled to take place over 10 years ending in 2026.
The plate was designed by staff of the Illinois Secretary of State's office, and drew criticism immediately, Blair Kamin of the Chicago Tribune calling the design "busy and banal". Two changes were made to the plate's design within the first year of issuance, both in order to make the serial more readable: the serial's layout was changed from AB1 2345 to AB 12345 (the space coming after the letters instead of after the first digit), before the image of Abraham Lincoln was changed from a dark gray color to a much lighter gray.