Tree ring data from the Cayon Creek Ruin, east central Arizona, are analyzed to evaluate two competing interpretations of pueblo growth at this well preserved cliff dwelling. Despite an anamalous dating pattern, a logistic model best describes pueblo growth at this well preserved clif dwelling. Despite an anomalous dating pattern, a logistic model best describes pueblo growth. Room construction activity in linked to population increase, which in turn, may be divides into two varieties: natural increase, and inmigration of households into the settlement. Logistic growth also accounts for population increase within the larger area of the Grasshopper region. I review the processes promoting both local and regional population increase, as well as subsequent abandonment of the mountains of Arizona. I suggest that rapid depopulation may have ocurred after A.D. 1375 because late prehistoric communities lost access to nonlocal goods that had previously allowed opulations to increase beyond local resource constraints.