Janesville, California

Janesville
Location of Janesville in Lassen County, California.
Janesville
Location in California
Coordinates: 40°17′48″N 120°31′27″W / 40.29667°N 120.52417°W / 40.29667; -120.52417
Country United States
State California
CountyLassen County
Area
  Total
13.199 sq mi (34.186 km2)
  Land13.187 sq mi (34.154 km2)
  Water0.012 sq mi (0.032 km2)  0.09%
Elevation
4,239 ft (1,292 m)
Population
 (2020)
  Total
2,461
  Density190/sq mi (72/km2)
Time zoneUTC-8 (Pacific (PST))
  Summer (DST)UTC-7 (PDT)
ZIP Code
96114
Area code530
GNIS feature IDs1658853; 2611437
U.S. Geological Survey Geographic Names Information System: Janesville, California; U.S. Geological Survey Geographic Names Information System: Janesville, California

Janesville (also known as Lassen) is a sparsely populated census-designated place in Lassen County, California. It is located 11 miles (18 km) southeast of Susanville, at an elevation of 4239 feet (1292 m). Janesville is located on the eastern slopes of the Sierra Nevada Mountain range. Its population is 2,461 as of the 2020 census, up from 1,408 from the 2010 census.

The community consists of an elementary school, a park, four churches, two gas stations, a pizza parlor, a coffee shop, a veterinary hospital, a hardware store, a post office, a Dollar General and a few other businesses.

Janesville stretches over a distance of 8 miles (13 km). Its ZIP Code is 96114. The community is inside area code 530.