Red List Category & Criteria: Vulnerable
Pinus greggii's extent of occurrence is beyond the thresholds for a threatened category. The area of occupancy is more than 500 km2, but less than 2,000 km2. There are a total of eight locations and the population is severely fragmented. A substantial decline has occurred, and is continuing to occur, in the southern subpopulation (Pinus greggii var. australis) which represents the majority of the total population. There is a lesser ongoing decline in the northern subpopulation (Pinus greggii var. greggii). Consequently the species is assessed as Vulnerable.
Some locations are within protected areas - Sierra Gorda, Los Marmoles and Cuenca Hidrografica del Rio Necaxa Reserve.