A moose population survey was conducted on the Yukon Flats in November 2015. This was the first fall survey since 2010 due to a lack of sufficient snow in early winter that caused surveys in 2012-2014 to be cancelled. Moose were counted in 100 of 421-5.3mi2 units, of which 59 were stratified high moose density and 41 low moose density. The estimate for the 2,269 mi2 survey area in the western Yukon Flats (Alaska Game Management Unit [GMU] 25D) was 790 total observable moose (95% CI; 600-980). Density of moose was 0.35/mi2 or 0.13/km2. The population was comprised of an estimated 609 adults (95% CI; 460-759) and 191 calves (126256. Search time averaged 6.7 minutes/mi2. The estimate of total observable moose increased from 2010 to 2015. Improved calf survival may have contributed to the population increase in some recent years. It was unlikely that public harvest of wolves and bears contributed, as harvest intensity was light. Thus, moose density increased in the presence of lightly harvested wolf and bear populations, suggesting that the dynamics of this low density population may sometimes be more complex than previously thought.