Grass Valley is a city in Nevada County, California, United States. Situated at roughly 2,500 feet (760 m) in elevation in the western foothills of the Sierra Nevada mountain range. As of the 2010 United States Census, its population was 12,860.

Penn Valley is a census-designated place in Nevada County, California. The population was 1,621 at the 2010 census, up from 1,387 at the 2000 census.

Nevada City is a charming historic town located in the Sierra Nevada foothills of California. The town is known for its Victorian architecture, vibrant arts scene, and beautiful natural surroundings. It is the county seat of Nevada County, California. The population was 3,068 as of the 2010 Census.

Truckee is a town located in Nevada County, California, USA. It is situated in the Sierra Nevada mountains and is known for its picturesque scenery and outdoor recreational opportunities. As of the 2010 United States Census, the population was 16,180.

Soda Springs is an unincorporated community located in Nevada County, California. Situated in the Sierra Nevada mountains, it is a popular destination for outdoor activities and offers various attractions and amenities. The population was 81 at the 2010 census.

Floriston is an unincorporated community and census-designated place in Nevada County, California. It is situated at an elevation of 5,400 ft (1,600 m) above sea level. Floriston is located on the Truckee River, 10 miles (16.1 km) east-northeast of Truckee. Formerly an important railroad stop and mill town. The population was 80 at the 2020 census.

Washington (originally, Indiana Camp) is a census-designated place located in Nevada County, California. Washington is located on the banks of the South Yuba River. The elevation is 2,612 feet (796 m). The population was 185 at the 2010 census. According to the 2020 census, the population was 137 with a median age of 61.7.

North San Juan is a small, unincorporated community in Nevada County, California. It's located in the Sierra Nevada foothills, about 20 miles northwest of Nevada City, the county seat. North San Juan is situated along State Route 49, which is a scenic route known for its historical significance during the California Gold Rush. The population was 225 at the 2020 census.

Kingvale is a small community located in Nevada County, California, in the Sierra Nevada mountain range. It's situated along Interstate 80, approximately halfway between the town of Truckee and Donner Pass. Kingvale is a popular area for outdoor recreation, particularly in winter, as it's near several ski resorts, including Sugar Bowl and Boreal Mountain Resort. The population was 128 in 2020.

Alta Sierra is a census-designated place in Nevada County, California. Nestled within the scenic foothills of the Sierra Nevada, Alta Sierra is a community that epitomizes the charm and tranquility of rural living while offering the conveniences of modern life. The population was 7,204 at the 2020 census, up from 6,911 at the 2010 census.