Much of Alitagtag was once part of
Bauan. On August 10, 1908, the resolution by the electorate of barrios Alitagtag, Balagbag, Dalipit, Munlawin, and Muzon was transmitted to the Provincial Committee, who would approve it in three months' time.
Batangas Governor Galicano Apacible later endorsed it to the Civil Commission for a hearing that would be held on January 2, 1909. The aforementioned barrios were separated from
Bauan to constitute the new independent municipality of Alitagtag by virtue of Executive Order No. 43 dated May 7, 1909. The order took effect on January 1, 1910. In 1957, the following barrios were created: Pingas, composed of
sitios Pingas and Corral; Tadlak, composed of sitios Tadlak and Malukan; and Sambi, composed of the sitio Sambi. ==Geography==