January 2, 1872: Due to the elimination and consolidation of prefectures after Haihan-chiken (abolition of feudal domains and establishment of prefectures), the four prefectures of Kishiwada, Hakuta, Yoshimi, and Tannan as well as a part of Gojo Prefecture were incorporated and merged in Sakai.
明治4年11月22日(旧暦)（1872年1月2日）-廃藩置県後の県の整理統廃合に伴い、岸和田・伯太・吉見・丹南4県（全域）と五條県の一部を編入合併。