Eight years after its creation as a regular municipality, on June 17, 1967, through "Republic Act No. 4979", the Province of Agusan was divided into the Provinces of Agusan del Norte and Agusan del Sur, in which San Francisco was part of the latter. The continued growth of Agusan del Sur also saw the development of the municipality of San Francisco. Its growing population later paved the way for the creation of the municipality of Rosario through "Republic Act No. 5760" approved by President Diosdado Macapagal on June 21, 1969, just two years after the creation of Agusan del Sur. As a result, the several "barrio"s of San Francisco including Bayugan III, Wasi-an, Santa Cruz, Cabawan, Cabantao, Marfil and Tagbayagan were incorporated in the newly created municipality. The "barrio"s of Buenasuerte, Caimpogan, Pasta, Lapinigan, Ebro, New Visayas, Bayugan II, Borbon, Tagapua, Pisaan, Santa Ana, Hubang, Alegria, San Isidro, Das-agan, Ladgadan, Lucac, Bitan-agan and Poblacion consisting of five barrios as stated in "PD No. 86" dated December 31, 1972, remained to form part of the 39,253-hectare Municipality of San Francisco. The "barrio"s of Rizal, Ormaca, Mate and Karaos were later created and added to form final 27 barangays of the present day San Francisco.