Santa Clara County Demographics

A map of Santa Clara County's Population by Race

Race	2024 Pop	2020 Pop	2024 %	2020 %
Asian	766,176	753,399	40.3%	38.9%
White	517,612	555,708	27.2%	28.7%
Hispanic	475,827	487,357	25.0%	25.2%
Multiracial	80,095	78,267	4.2%	4.0%
Black	41,721	42,148	2.2%	2.2%
Native American/Other	20,616	19,380	1.1%	1.0%

Santa Clara County, California has an estimated population of 1,902,047, a slight decrease from the 1,936,259 recorded in the 2020 Census. The population is 40.3% Asian, 27.2% White, 25.0% Hispanic, 4.2% Multiracial, 2.2% Black, and 1.1% Native American/Other. This demographic dot map shows the population of Santa Clara County, with one dot drawn for each person counted by the Census, color-coded by race.

Santa Clara is about as racially diverse as it was in the 2020 Census. It is about as diverse as California overall. Demographers use a diversity index to measure the probability that two randomly selected individuals belong to different racial or ethnic groups. In Santa Clara County, that probability was 70.1% in 2020 and 69.9% in the most recent ACS estimates.

Santa Clara County is ranked the 6th most populous county in California, out of 58 counties. Santa Clara County was ranked the 6th most populous county in the 2020 Census.

Santa Clara County's White Population

517,612 residents of Santa Clara County, or 27.2% of the population, identify as White. The share of White residents in Santa Clara County is lower than in California overall, where 33.8% of the population is White. Santa Clara County ranks 49th statewide in terms of White residents as a share of the population, out of 58 counties.

Since the 2020 Census, Santa Clara County's White population has declined by an estimated 6.9%. White residents' share of Santa Clara County's population has decreased from 28.7% to 27.2%.

Santa Clara County is less White than neighboring Santa Cruz County (53.9% White), Alameda County (27.4% White), San Mateo County (34.7% White), Contra Costa County (38.1% White), and Stanislaus County (36.3% White).

Santa Clara County's Black Population

41,721 residents of Santa Clara County, or 2.2% of the population, identify as Black. The share of Black residents in Santa Clara County is slightly lower than in California overall, where 5.2% of the population is Black. Santa Clara County ranks 23rd statewide in terms of Black residents as a share of the population, out of 58 counties.

Since the 2020 Census, Santa Clara County's Black population has declined by an estimated 1.0%. Black residents' share of Santa Clara County's population has remained roughly unchanged at 2.2%.

Santa Clara County is more Black than neighboring Santa Cruz County (0.7% Black), and San Mateo County (2% Black). Santa Clara County is less Black than neighboring Alameda County (9.3% Black), Contra Costa County (7.9% Black), and Stanislaus County (2.6% Black).

Santa Clara County's Asian Population

766,176 residents of Santa Clara County, or 40.3% of the population, identify as Asian. The share of Asian residents in Santa Clara County is significantly higher than in California overall, where 15.3% of the population is Asian. Santa Clara County ranks 1st statewide in terms of Asian residents as a share of the population, out of 58 counties.

Since the 2020 Census, Santa Clara County's Asian population has grown by an estimated 1.7%. Asian residents' share of Santa Clara County's population has increased from 38.9% to 40.3%.

Santa Clara County is more Asian than neighboring Santa Cruz County (4.7% Asian), Alameda County (32.7% Asian), San Mateo County (31% Asian), Contra Costa County (18.6% Asian), and Stanislaus County (5.9% Asian).

Santa Clara County's Hispanic Population

475,827 residents of Santa Clara County, or 25.0% of the population, identify as Hispanic. The share of Hispanic residents in Santa Clara County is significantly lower than in California overall, where 40.2% of the population is Hispanic. Santa Clara County ranks 32nd statewide in terms of Hispanic residents as a share of the population, out of 58 counties.

Since the 2020 Census, Santa Clara County's Hispanic population has declined by an estimated 2.4%. Hispanic residents' share of Santa Clara County's population has remained roughly unchanged at 25.0%.

Santa Clara County is more Hispanic than neighboring Alameda County (23.4% Hispanic), and San Mateo County (24.9% Hispanic). Santa Clara County is less Hispanic than neighboring Santa Cruz County (35.2% Hispanic), Contra Costa County (27.6% Hispanic), and Stanislaus County (50% Hispanic).

Santa Clara County's Native American/Other Population

20,616 residents of Santa Clara County, or 1.1% of the population, identify as American Indian/Alaska Native/Native Hawaiian/Pacific Islander/Other. The share of Native American/Other residents in Santa Clara County is comparable to the share in California overall, where 1.2% of the population is Native American/Other. Santa Clara County ranks 55th statewide in terms of Native American/Other residents as a share of the population, out of 58 counties.

Since the 2020 Census, Santa Clara County's Native American/Other population has grown by an estimated 6.4%. Native American/Other residents' share of Santa Clara County's population has remained roughly unchanged at 1.1%.

Santa Clara County is more Native American/Other than neighboring Santa Cruz County (1% Native American/Other). Santa Clara County is less Native American/Other than neighboring Alameda County (1.6% Native American/Other), San Mateo County (2.1% Native American/Other), Contra Costa County (1.4% Native American/Other), and Stanislaus County (1.2% Native American/Other).

Santa Clara County's Multiracial Population

80,095 residents of Santa Clara County, or 4.2% of the population, identify as Multiracial. The share of Multiracial residents in Santa Clara County is comparable to the share in California overall, where 4.4% of the population is Multiracial. Santa Clara County ranks 40th statewide in terms of Multiracial residents as a share of the population, out of 58 counties.

Since the 2020 Census, Santa Clara County's Multiracial population has grown by an estimated 2.3%. Multiracial residents' share of Santa Clara County's population has remained roughly unchanged at 4.2%.

Santa Clara County is more Multiracial than neighboring Stanislaus County (4% Multiracial). Santa Clara County is less Multiracial than neighboring Santa Cruz County (4.5% Multiracial), Alameda County (5.6% Multiracial), San Mateo County (5.2% Multiracial), and Contra Costa County (6.3% 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.