Historical documents revealed that the municipality of Ocampo, known before as Mabato-bato, was existing since 1735. Mabato-bato started as a sitio which was described as abounding with rocks and boulders of various sizes which were scattered over the place. Since the early 1900's, the town of Ocampo had been a part of Pili though it separated years later, in 1948, and became an independent municipality.

 

        August 13, 1949 marked a major event in the history of the town as this was the inauguration date of Ocampo's elevation into a municipality. It was also during this day when the name Mabato-bato was officially changed into Ocampo, in honor of the late Don Julian Ocampo, then the governor of Camarines Sur. Ocampo is the place where Governor Luis Villafuerte chose to build a sprawling deer sanctuary where at present houses different deer species from both local and foreign origins. This has served both for tourist attraction and commercial purposes.

 

       The municipality is classified 4th class according to income and with Forty Nine Thousand One   Hundred Seventy Five (49,175) population as of 2009 national census.  The municipality has twenty five (25) barangays , with twenty  (20) public elementary schools  ,two (3) private primary schools  and two (2) public secondary schools , Ocampo National High School and its annex  school, Hanawan High School at Hanawan, Ocampo, Camarines Sur.