Union City, CA Demographics

A map of Union City's Population by Race

Union City, California has an estimated population of 67,464, a decrease from the 70,143 recorded in the 2020 Census. The population is 56.9% Asian, 20.2% Hispanic, 13.6% White, 4.4% Black, 3.4% Multiracial, and 1.4% Native American/Other. This demographic dot map shows the population of Union City, with one dot drawn for each person counted by the Census, color-coded by race.

Union City is about as racially diverse as it was in 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 Union City, that probability was 60.8% in 2020 and 61.3% in the most recent ACS estimates.

Union City is ranked the 136th 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). Union City was ranked the 130th most populous place in the 2020 Census.

Union City's White Population

9,207 residents of Union City, or 13.6% of the population, identify as White. The share of White residents in Union City is significantly lower than in California overall, where 33.8% of the population is White. Union City ranks 1423rd statewide in terms of White residents as a share of the population, out of 1,618 places.

Since the 2020 Census, Union City's White population has grown by an estimated 19.7%. White residents' share of Union City's population has increased from 11.0% to 13.6%.

Union City is more White than neighboring Hayward (12.7% White). Union City is less White than neighboring Fairview (29.1% White), Fremont (15.7% White), Newark (16.7% White), and Cherryland (18.8% White).

Union City's Black Population

2,985 residents of Union City, or 4.4% of the population, identify as Black. The share of Black residents in Union City is comparable to the share in California overall, where 5.2% of the population is Black. Union City ranks 239th statewide in terms of Black residents as a share of the population, out of 1,618 places.

Since the 2020 Census, Union City's Black population has remained roughly the same. Black residents' share of Union City's population has remained roughly unchanged at 4.4%.

Union City is more Black than neighboring Fremont (2.8% Black), and Newark (3.2% Black). Union City is less Black than neighboring Fairview (12% Black), Hayward (7.6% Black), and Cherryland (7.5% Black).

Union City's Asian Population

38,405 residents of Union City, or 56.9% of the population, identify as Asian. The share of Asian residents in Union City is significantly higher than in California overall, where 15.3% of the population is Asian. Union City ranks 16th statewide in terms of Asian residents as a share of the population, out of 1,618 places.

Since the 2020 Census, Union City's Asian population has declined by an estimated 4.6%. Asian residents' share of Union City's population has decreased from 57.4% to 56.9%.

Union City is more Asian than neighboring Fairview (21.2% Asian), Newark (46.3% Asian), Hayward (30% Asian), and Cherryland (14.5% Asian). Union City is less Asian than neighboring Fremont (63.7% Asian).

Union City's Hispanic Population

13,626 residents of Union City, or 20.2% of the population, identify as Hispanic. The share of Hispanic residents in Union City is significantly lower than in California overall, where 40.2% of the population is Hispanic. Union City ranks 828th statewide in terms of Hispanic residents as a share of the population, out of 1,618 places.

Since the 2020 Census, Union City's Hispanic population has declined by an estimated 9.6%. Hispanic residents' share of Union City's population has decreased from 21.5% to 20.2%.

Union City is more Hispanic than neighboring Fremont (13.1% Hispanic). Union City is less Hispanic than neighboring Fairview (27.6% Hispanic), Newark (27.2% Hispanic), Hayward (41.3% Hispanic), and Cherryland (52.3% Hispanic).

Union City's Native American/Other Population

925 residents of Union City, or 1.4% of the population, identify as American Indian/Alaska Native/Native Hawaiian/Pacific Islander/Other. The share of Native American/Other residents in Union City is comparable to the share in California overall, where 1.2% of the population is Native American/Other. Union City ranks 536th statewide in terms of Native American/Other residents as a share of the population, out of 1,618 places.

Since the 2020 Census, Union City's Native American/Other population has declined by an estimated 20.5%. Native American/Other residents' share of Union City's population has remained roughly unchanged at 1.4%.

Union City is more Native American/Other than neighboring Fairview (0.8% Native American/Other), and Fremont (1% Native American/Other). Union City is less Native American/Other than neighboring Newark (2.7% Native American/Other), Hayward (3.5% Native American/Other), and Cherryland (2.6% Native American/Other).

Union City's Multiracial Population

2,316 residents of Union City, or 3.4% of the population, identify as Multiracial. The share of Multiracial residents in Union City is comparable to the share in California overall, where 4.4% of the population is Multiracial. Union City ranks 921st statewide in terms of Multiracial residents as a share of the population, out of 1,618 places.

Since the 2020 Census, Union City's Multiracial population has declined by an estimated 21.0%. Multiracial residents' share of Union City's population has decreased from 4.2% to 3.4%.

Union City is less Multiracial than neighboring Fairview (9.4% Multiracial), Fremont (3.7% Multiracial), Newark (3.9% Multiracial), Hayward (4.9% Multiracial), and Cherryland (4.2% 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.