<page_title> Vehicle registration plates of Indiana </page_title> <section_title> Passenger plates 1913 to present </section_title> <table> <cell> Small white-on-blue county name sticker in bottom right corner as on the Back Home Again base. Allen County began issuing two-letter, three-digit serials in 1992 after reaching 2Z9999. <col_header> Notes </col_header> </cell> </table>
In 1992, Allen County reached 2Z9999 and introduced a format with two letters and three digits.