Province of Pesaro and Urbino
After the referendum of 2006, seven municipalities of Montefeltro were detached from the Province of Pesaro and Urbino (Marche) to join the Province of Rimini on 15 August 2009. The municipalities are Casteldelci, Maiolo, Novafeltria, Pennabilli, San Leo, Sant'Agata Feltria and Talamello. After the referendum of 2007, two other municipalities from the Province of Pesaro and Urbino, Montecopiolo and Sassofeltrio, joined the Province of Rimini on the 17th of June 2021.