On March 8, 2011, voters approved a ballot measure, designated as Measure A, to incorporate the area into its own city; as a result, the area has been an incorporated city since July 1, 2011.
2011年3月8日，选民批准了一项被称为议案A的投票议案，使该地区建立自己的城市; 因此，该地区自2011年7月1日起成为建制市。