premise: Incline Village is a census-designated place (CDP) in Washoe County, Nevada on the north shore of Lake Tahoe. The population was 8,777 at the 2010 census. It is part of the Reno−Sparks Metropolitan Statistical Area. Until the 2010 census, the CDP Crystal Bay, Nevada was counted jointly with Incline Village.
hypothesis: During the 2010 census the population of Incline Village wasn't counted.  
reason: The 2010 census reported that there were 8777 people in Incline Village which means that it was counted.