[5] San Nicolas traces its roots to barrio Wawa, which was once part of the municipality of Taal.

The barrio also covered areas of what is now Alitagtag, Agoncillo, Lemery, and San Luis, according to old locals.

[5] In 1955, the barrios of San Nicolas, Abelo, Alas-as, Balete, Bancoro, Bangin, Calangay, Calawit, Calumala, Hipit, Maabud, Munlawin, Pansipit, Pulang-Bato, Saimsim, Sinturisan, Talang, and Tambo were separated from Taal and constituted into a new and separate municipality known as San Nicolas.

[8] In 1957, the following sitios were converted into independent barrios: Burol from Tambo,[9] Tagudtod from Munlawin,[10] Kalawit and Pulang-Bato from Alas-as,[11][12] and Baluk-Baluk from Hipit.

[13] In 1961, the barrios of Calumala, Tambo, Saimsim and Bucal were separated from San Nicolas to form parts of the new municipality of Santa Teresita.