Established in 1935 thru Proclamation No. 798 signed by then Acting Governor General Joseph R. Hayden
- NNNP has a total land area of 80,454.50 hectares. As of 2001, the forest cover was reduced to only 22,288.81 (28%)
- Located in the cities of Talisay, Silay, Victorias, Cadiz, Sagay, & San Carlos and the municipalities of EB Magalona, Toboso, Calatrava, DS Benedicto & Murcia
- About 48% of the entire NNNP (40,643.3767 out of 80,454.5 hectares) is occupied.
- Total population is 40,913 consisting of 8,814 households.
- 3,705 CSC holders in 30 ISF sites with a total area of 11,265.8 hectares
- The overall bird record for NNNP is 140 species with 40% endemism
- Identified as an International Bird Area by Birdlife International.
- It has six of Negros Island species of large mammals, two of which are endangered: the Philippine Spotted Deer and the Visayan Warty Pig
- Home to numerous Species of Flora and Fauna
- The largest watershed of the Province being the main source of water for 17 municipalities and cities in Central and Northern Negros.