The objective of the present study is to construct a density management diagram for Pinus cooperi var ornelasi strands in the state of Durango, Mexico. The resulting diagram, based on different crown classes, was constructed for the existing even-aged trees. The line of crown closure reached a Reineke stand density index of 310.31, the line for dominant crown trees reached 658.62, the line for intermediate crown trees was 720.18, and the line for suppressed crown trees was 1007.05 Sdi. These lines indicate possible density ranges within which a even-aged Pinus cooperi stand could be managed. The methodology used yielded results similar to those found for other pine species in Mexico.