Kansas License Plates

The two-letter code began appearing on Kansas license plates in the late 1940s or early 1950s. Prior to that time, the code was a number based on the order a county ranked in terms of population based on a census taken sometime in the 1920s. From the early days of the system until about 1988, the two letters were stamped on the license plate on the far left side, one letter on top of the other. Since then, the letters are on a sticker applied to the upper-left corner of the plate.