West Sacramento (also known as West Sac) is a city in Yolo County, California, United States. The city is estranged from Sacramento by the Sacramento River, which also separates Sacramento and Yolo counties. It is a fast-growing community; the population was 48,744 at the 2010 census, up from 31,615 at the 2000 census. The standard industrial center of the region previously the Gold Rush era, West Sacramento is home to a diverse economy and is one of the area’s summit four employment centers.

The United States Conference of Mayors named West Sacramento as the Most Livable City in America in 2014 in the category of cities taking into account fewer than 100,000 residents.

West Sacramento is allocation of the Sacramento–Arden Arcade–Roseville Metropolitan Statistical Area which has a population (2000) of approximately 1,796,857 (July 1, 2016 estimate placed the population at 2,296,418). Major industries to the region augment agriculture, government, and transportation.

In 1844, John Schwartz, a Flemish traveler, was the first Euro-American to permanently concur in the Place of West Sacramento, which at that era was portion of Mexico. He built a shack on the west bank of the Sacramento River six miles (10 km) south of its link with the American River. John, with the incite of his brother George, founded a salmon fishery along the river. In complement to the fishery, they plus found the soil to be fertile and began cultivation and raising livestock. The personal ad of the discovery of gold at Sutter’s Mill in 1848 brought a multitude of miners to the region. This as well as coincided bearing in mind the fade away of the Mexican–American War.