Janesville, CA Demographics

A map of Janesville's Population by Race

Janesville, California has an estimated population of 2,399, a slight decrease from the 2,461 recorded in the 2020 Census. The population is 78.4% White, 14.5% Hispanic, 6.4% Multiracial, 0.7% Native American/Other, 0.0% Black, and 0.0% Asian. This demographic dot map shows the population of Janesville, with one dot drawn for each person counted by the Census, color-coded by race.

Janesville has become more racially diverse since the 2020 Census. It is considerably less diverse than California overall. Demographers use a diversity index to measure the probability that two randomly selected individuals belong to different racial or ethnic groups. In Janesville, that probability was 34.0% in 2020 and 36.1% in the most recent ACS estimates.

Janesville is ranked the 860th most populous place in California, out of 1,618 places. This ranking is based on the Census definition of a place, which includes incorporated places like cities, towns, and villages, as well as unincorporated census-designated places (CDPs). Janesville was ranked the 857th most populous place in the 2020 Census.

Janesville's White Population

1,880 residents of Janesville, or 78.4% of the population, identify as White. The share of White residents in Janesville is significantly higher than in California overall, where 33.8% of the population is White. Janesville ranks 223rd statewide in terms of White residents as a share of the population, out of 1,618 places.

Since the 2020 Census, Janesville's White population has declined by an estimated 4.9%. White residents' share of Janesville's population has decreased from 80.3% to 78.4%.

Janesville is more White than neighboring Johnstonville (63.8% White), Susanville (52.3% White), and Milford (0% White). Janesville is less White than neighboring Litchfield (100% White), and Patton Village (80.3% White).

Janesville's Black Population

0 residents of Janesville, or 0.0% of the population, identify as Black. The share of Black residents in Janesville is lower than in California overall, where 5.2% of the population is Black. Janesville ranks 1332nd statewide in terms of Black residents as a share of the population, out of 1,618 places.

Since the 2020 Census, Janesville's Black population has declined by an estimated 100.0%. Black residents' share of Janesville's population has remained roughly unchanged at 0.0%.

Janesville is less Black than neighboring Susanville (10.1% Black), and Patton Village (7.4% Black).

Janesville's Asian Population

0 residents of Janesville, or 0.0% of the population, identify as Asian. The share of Asian residents in Janesville is significantly lower than in California overall, where 15.3% of the population is Asian. Janesville ranks 1250th statewide in terms of Asian residents as a share of the population, out of 1,618 places.

Since the 2020 Census, Janesville's Asian population has declined by an estimated 100.0%. Asian residents' share of Janesville's population has decreased from 0.7% to 0.0%.

Janesville is less Asian than neighboring Johnstonville (0.6% Asian), Susanville (2.9% Asian), and Patton Village (1.7% Asian).

Janesville's Hispanic Population

348 residents of Janesville, or 14.5% of the population, identify as Hispanic. The share of Hispanic residents in Janesville is significantly lower than in California overall, where 40.2% of the population is Hispanic. Janesville ranks 1276th statewide in terms of Hispanic residents as a share of the population, out of 1,618 places.

Since the 2020 Census, Janesville's Hispanic population has grown by an estimated 43.2%. Hispanic residents' share of Janesville's population has increased from 9.9% to 14.5%.

Janesville is more Hispanic than neighboring Litchfield (0% Hispanic), Milford (0% Hispanic), and Patton Village (0% Hispanic). Janesville is less Hispanic than neighboring Johnstonville (27.1% Hispanic), and Susanville (27.1% Hispanic).

Janesville's Native American/Other Population

17 residents of Janesville, or 0.7% of the population, identify as American Indian/Alaska Native/Native Hawaiian/Pacific Islander/Other. The share of Native American/Other residents in Janesville is comparable to the share in California overall, where 1.2% of the population is Native American/Other. Janesville ranks 363rd statewide in terms of Native American/Other residents as a share of the population, out of 1,618 places.

Since the 2020 Census, Janesville's Native American/Other population has declined by an estimated 68.5%. Native American/Other residents' share of Janesville's population has decreased from 2.2% to 0.7%.

Janesville is more Native American/Other than neighboring Litchfield (0% Native American/Other), and Milford (0% Native American/Other). Janesville is less Native American/Other than neighboring Johnstonville (2.8% Native American/Other), Susanville (4.3% Native American/Other), and Patton Village (2.3% Native American/Other).

Janesville's Multiracial Population

154 residents of Janesville, or 6.4% of the population, identify as Multiracial. The share of Multiracial residents in Janesville is comparable to the share in California overall, where 4.4% of the population is Multiracial. Janesville ranks 304th statewide in terms of Multiracial residents as a share of the population, out of 1,618 places.

Since the 2020 Census, Janesville's Multiracial population has declined by an estimated 8.3%. Multiracial residents' share of Janesville's population has remained roughly unchanged at 6.4%.

Janesville is more Multiracial than neighboring Johnstonville (5.7% Multiracial), Litchfield (0% Multiracial), Susanville (3.3% Multiracial), and Milford (0% Multiracial). Janesville is less Multiracial than neighboring Patton Village (8.2% Multiracial).

Sources: Most recent population estimates are from the 2020-2024 American Community Survey 5-Year Estimates. 2020 population counts and map data are from 2020 Census State Redistricting Data. Geographic data are from Census TIGER/Line Shapefiles.