Tapaz lies within the latitude 11° 09’ to 11° 09’ 42” and the longitude of 121° 11’ to 122° 34’ 45”. It is bounded on the northwest and northeast by the Municipality of Jamindan in the Province of Capiz, on the east by the Municipality of Dumalag of the Province of Capiz, on the west by the Province of Antique, and by the Province of Iloilo, principally by the Municipalities of Lambunao, Calinog and Bingawan from the southwest to the southeast.
Tapaz was founded in 1835 but it continued being a part of Dumalag for many years. In 1862 and 1863 two letters were made to declare parish under the patronage of St. Jerome. Both were signed by Governor General Lemery, but they were never executed. Finally, in 1874, Tapaz was declared an independent parish by Jaro Bishop Mariano Cuartero.