In 1945, Idaho began using the county license plate prefix designators still in use today. If you know the system, you can identify the county that issued most Idaho plates.
Idaho PlateFinder was created to help you learn about Idaho by reading the codes at the beginning of license plates you see while travelling in Idaho and elsewhere. The app shows where each county is located in the state. It also links to additional information about each county and its county seat.
Students of Idaho history will appreciate Idaho PlateFinder as they study Idaho and memorize and review her counties.