Roseville (formerly, Roseville Junction,Junction, and Grider's) is the largest city in Placer County, California, United States, in the Sacramento metropolitan area. As of January 1, 2015, the state Department of Finance estimated the city's population to be 128,382.Interstate 80 runs through Roseville and State Route 65 runs through part of the northern edge of the city. The settlement was originally a stage coach station called Griders. According to the Roseville Historical Society, in 1864 the Central Pacific Railroad tracks were constructed eastward from Sacramento, and when they crossed a small California Central Railroad line they named the spot "Junction". Junction eventually became known as Roseville. In 1909, three years after the Southern Pacific Railroad moved its facilities from Rocklin to Roseville, the town became an incorporated city. What followed was a period of expansion, with the community building more than 100 structures, including what was the largest ice manufacturing plant in the world (Pacific Fruit Express building, in 1913).