Map of Janesville CDP, California

Janesville (also known as Lassen) is a 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, 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.

Janesville CDP overview:
Name:	Janesville CDP
LSAD Code:	57
LSAD Description:	CDP (suffix)
State:	California
County:	Lassen County
Elevation:	4,239 ft (1,292 m)
Total Area:	13.199 sq mi (34.186 km²)
Land Area:	13.187 sq mi (34.154 km²)
Water Area:	0.012 sq mi (0.032 km²) 0.09%
Total Population:	2,461
Population Density:	190/sq mi (72/km²)
ZIP code:	96114
Area code:	530
FIPS code:	0637134

Online Interactive Map

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Janesville online map. Source: Basemap layers from Google Map, Open Street Map (OSM), Arcgisonline, Wmflabs. Boundary Data from Database of Global Administrative Areas.

Janesville location map. Where is Janesville CDP?

Janesville location on the U.S. Map. Where is Janesville CDP. — Janesville location on the U.S. Map.

Janesville location on the California map. Where is Janesville CDP. — Location of Janesville in California.

History

Fort Janesville In 1860, after the First Battle of Pyramid Lake, settlers built a loopholed stockade for protection from an Indian attack that never materialized. The fort, which had a bastion, or block house, in its southwest angle, was less than a mile from the town of Janesville. The site of the fort is now a California Historic Landmark.

In 1864, Janesville lost to Susanville by one vote from becoming the county seat. The Janesville post office opened in 1861, closed for a time in 1864, changed its name to Lassen in 1914, and renamed to Janesville in 1923. The name honors Jane Bankhead, wife of an early settler.