Crescent Valley is a census-designated place (CDP) in Eureka County, Nevada, United States, directly off Nevada State Route 306. It is the site of Crescent Valley Elementary School, Crescent Valley Fair Grounds, and Crescent Valley Community Park. The census-designated place (CDP) of Crescent Valley had a population of 392 as of the 2010 census. Crescent Valley is part of the Elko Micropolitan Statistical Area.