In the Nebraska license plate system, Sarpy County was represented by the prefix "59" (it had the 59th largest number of vehicles registered in the county when the license plate system was established in 1922). Many license plates issued in Sarpy County featured the stacked format of the 59 code. The county, just south of Omaha, had grown significantly in population in the decades following 1922 and therefore required five characters rather than the four allowed by a standard double-digit county code. In 2002, the state discontinued the 1922 system in Sarpy as well as Douglas and Lancaster counties.