West Sacramento is a city in Yolo County, California. It is contiguous with Sacramento, but is separated by the Sacramento River which is also the county line, so West Sacramento is in a different county than Sacramento. It is a fast growing community; the population was 31,615 at the 2000 census but the Census Bureau estimated the population to be 44,162 as of 2006. West Sacramento is part of the Sacramento–Arden-Arcade–Roseville Metropolitan Statistical Area which has a population of approximately 1,796,857. Major industries to the region include agriculture and transportation.