Roseville (formerly, Roseville Junction, Junction, and Griders) is a city in Placer County, California, United States, located in the metropolitan area of Sacramento. As of the 2010 U.S. Census, the population was 118,788. Roseville's population is expected to reach 133,680 by 2015. Interstate 80 runs through Roseville and State Route 65 bisects the northern part of the city.
The settlement was originally a stage coach station called Griders. When the railroad arrived the name was changed to Junction and then to Roseville.
The Roseville post office opened in 1864. Roseville incorporated as a city in 1909.