Period of the King Narai.

In the Thesaphiban administrative reforms at the beginning of the 20th century, the province, together with Lom Sak province to the north, formed monthon Phetchabun. As it was the smallest monthon, it was also the first monthon to be dissolved in 1915, after being temporarily administered from Monthon Phitsanulok between 1903 and 1907. Lom Sak province was abolished and merged into Phetchabun