Janesville is a small unincorporated community located in Lassen County, northeastern California, United States. It is situated about 5 miles south of Susanville, the county seat of Lassen County. Its population is 2,461 as of the 2020 census, up from 1,408 from the 2010 census.

Westwood is a census-designated place (CDP) in Lassen County, California, United States. It is located in the eastern part of the county, at an elevation of 5,128 feet (1,563 m) above sea level. As of the 2020 census, the population of Westwood was estimated to be 1,716.

Nubieber is a small community located in Lassen County, California, United States. It is situated in the northeastern part of the state, in the northeastern portion of the Sierra Nevada mountain range. The town is part of the Honey Lake Valley, an area known for its rural character and natural beauty. Its population is 19 as of the 2020 census, down from 50 from the 2010 census.

Susanville is a town in and the county seat of Lassen County, California, United States. Susanville is located on the Susan River in the southern part of the county, at an elevation of 4,186 feet (1,276 m). Its population is 16,728 as of the 2020 census, down from 17,947 from the 2010 census.

Bieber is a small, rural community in Lassen County, northeastern California. Located in the Big Valley, it’s close to the border with Modoc and Shasta counties and sits near the Pit River, making it an area rich in natural landscapes and outdoor recreation opportunities. With a population of a few hundred people, Bieber is one of the more remote communities in California, offering a quiet, close-knit lifestyle. Its population is 266 as of the 2020 census, down from 312 from the 2010 census.

Litchfield is a census-designated place in Lassen County, California. It is located in the northeastern part of California, close to the town of Susanville and along the Highway 395 corridor. This region is known for its open landscapes, ranching, and proximity to natural attractions like Lassen Volcanic National Park, Eagle Lake, and the Modoc Plateau. Its population is 160 as of the 2020 census, down from 195 from the 2010 census.

Spaulding, California, is a small unincorporated community located in Lassen County. Situated on the western shore of Eagle Lake, Spaulding is known primarily as a destination for outdoor enthusiasts and those seeking recreation on or near the lake. Its population is 206 as of the 2020 census, up from 178 from the 2010 census.

Doyle is a rural small town in Lassen County, California. It is located 40 miles (64 km) southeast of Susanville, at an elevation of 4275 feet (1303 m). It is located 45 miles (72 km) northwest of Reno, Nevada. Its population is 536 as of the 2020 census, down from 678 from the 2010 census.

Little Valley is a small, unincorporated community located in Lassen County, in the northeastern part of California. It lies to the west of the town of Susanville, nestled in a scenic valley surrounded by forests and mountains. It is at an elevation of 4,190 feet (1,280 m). Its population is 84 as of the 2020 census.

Johnstonville is a small unincorporated community in Lassen County, California. It is situated in the northeastern part of the state, near the city of Susanville. The area around Johnstonville provides numerous outdoor activities. It at an elevation of 4131 feet (1259 m). Its population is 973 as of the 2020 census, down from 1,024 from the 2010 census.