Janesville

County:: Lassen County
County Seat:: No
Area (mi²):: 33.814
State:: California

Janesville is a CDP located in Lassen County, California. Janesville has a 2025 population of 2,949. Janesville is currently growing at a rate of 3.62% annually and its population has increased by 5.21% since the most recent census, which recorded a population of 2,803 in 2020.

The average household income in Janesville is $85,504 with a poverty rate of 6.7%. The median age in Janesville is 52.5 years: 56.1 years for males, and 51.3 years for females.

Demographics

The racial composition of Janesville includes 82.43% White, 9.24% other race, and smaller percentages for Native American, Asian, Black or African American, Native Hawaiian or Pacific Islander and multiracial populations.

Population by Race

White

Other race

Two or more races

Native American

Asian

Black or African American

Native Hawaiian or Pacific Islander

Race	Population	Percentage (of total)
White	2,017	82.43%
Other race	226	9.24%
Two or more races	131	5.35%
Native American	61	2.49%
Asian	12	0.49%
Black or African American	0	0%
Native Hawaiian or Pacific Islander	0	0%

Janesville Marital Status

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Janesville's average per capita income is $43,170. Household income levels show a median of $70,938. The poverty rate stands at 6.7%.

Families: A family includes the owner or renter of the home along with everyone related to them - whether through birth, marriage, or adoption. This includes relatives like spouses, children, parents, siblings, grandparents, and any other family members.

Households: A household includes all the people who occupy a housing unit (such as a house or apartment) as their usual place of residence.

Non Families: A nonfamily household is either someone living alone or when the owner/renter lives with people they aren't related to, like roommates.

Name	Median	Mean
Married Families	$100,893	-
Families	$77,125	$90,646
Households	$70,938	$85,504
Non Families	$48,917	$69,933

$43,170

Average Income

$70,938

Median Household Income

6.7%

Poverty Rate