San Joaquin County Demographics

A map of San Joaquin County's Population by Race

Race	2024 Pop	2020 Pop	2024 %	2020 %
Hispanic	339,161	325,725	42.5%	41.8%
White	213,729	215,530	26.8%	27.7%
Asian	145,037	134,684	18.2%	17.3%
Black	52,516	56,898	6.6%	7.3%
Multiracial	36,801	34,092	4.6%	4.4%
Native American/Other	10,090	12,304	1.3%	1.6%

San Joaquin County, California has an estimated population of 797,334, a slight increase from the 779,233 recorded in the 2020 Census. The population is 42.5% Hispanic, 26.8% White, 18.2% Asian, 6.6% Black, 4.6% Multiracial, and 1.3% Native American/Other. This demographic dot map shows the population of San Joaquin County, with one dot drawn for each person counted by the Census, color-coded by race.

San Joaquin is about as racially diverse as it was in the 2020 Census. It is more 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 San Joaquin County, that probability was 71.1% in 2020 and 70.8% in the most recent ACS estimates.

San Joaquin County is ranked the 14th most populous county in California, out of 58 counties. San Joaquin County was ranked the 14th most populous county in the 2020 Census.

San Joaquin County's White Population

213,729 residents of San Joaquin County, or 26.8% of the population, identify as White. The share of White residents in San Joaquin County is lower than in California overall, where 33.8% of the population is White. San Joaquin County ranks 51st statewide in terms of White residents as a share of the population, out of 58 counties.

Since the 2020 Census, San Joaquin County's White population has remained roughly the same. White residents' share of San Joaquin County's population has decreased from 27.7% to 26.8%.

San Joaquin County is less White than neighboring Stanislaus County (36.3% White), Sacramento County (40.6% White), Contra Costa County (38.1% White), Alameda County (27.4% White), and Solano County (33.2% White).

San Joaquin County's Black Population

52,516 residents of San Joaquin County, or 6.6% of the population, identify as Black. The share of Black residents in San Joaquin County is comparable to the share in California overall, where 5.2% of the population is Black. San Joaquin County ranks 7th statewide in terms of Black residents as a share of the population, out of 58 counties.

Since the 2020 Census, San Joaquin County's Black population has declined by an estimated 7.7%. Black residents' share of San Joaquin County's population has decreased from 7.3% to 6.6%.

San Joaquin County is more Black than neighboring Stanislaus County (2.6% Black). San Joaquin County is less Black than neighboring Sacramento County (9% Black), Contra Costa County (7.9% Black), Alameda County (9.3% Black), and Solano County (12.3% Black).

San Joaquin County's Asian Population

145,037 residents of San Joaquin County, or 18.2% of the population, identify as Asian. The share of Asian residents in San Joaquin County is slightly higher than in California overall, where 15.3% of the population is Asian. San Joaquin County ranks 9th statewide in terms of Asian residents as a share of the population, out of 58 counties.

Since the 2020 Census, San Joaquin County's Asian population has grown by an estimated 7.7%. Asian residents' share of San Joaquin County's population has increased from 17.3% to 18.2%.

San Joaquin County is more Asian than neighboring Stanislaus County (5.9% Asian), Sacramento County (17.6% Asian), and Solano County (15.9% Asian). San Joaquin County is less Asian than neighboring Contra Costa County (18.6% Asian), and Alameda County (32.7% Asian).

San Joaquin County's Hispanic Population

339,161 residents of San Joaquin County, or 42.5% of the population, identify as Hispanic. The share of Hispanic residents in San Joaquin County is slightly higher than in California overall, where 40.2% of the population is Hispanic. San Joaquin County ranks 18th statewide in terms of Hispanic residents as a share of the population, out of 58 counties.

Since the 2020 Census, San Joaquin County's Hispanic population has grown by an estimated 4.1%. Hispanic residents' share of San Joaquin County's population has increased from 41.8% to 42.5%.

San Joaquin County is more Hispanic than neighboring Sacramento County (24.2% Hispanic), Contra Costa County (27.6% Hispanic), Alameda County (23.4% Hispanic), and Solano County (29.6% Hispanic). San Joaquin County is less Hispanic than neighboring Stanislaus County (50% Hispanic).

San Joaquin County's Native American/Other Population

10,090 residents of San Joaquin County, or 1.3% of the population, identify as American Indian/Alaska Native/Native Hawaiian/Pacific Islander/Other. The share of Native American/Other residents in San Joaquin County is comparable to the share in California overall, where 1.2% of the population is Native American/Other. San Joaquin County ranks 31st statewide in terms of Native American/Other residents as a share of the population, out of 58 counties.

Since the 2020 Census, San Joaquin County's Native American/Other population has declined by an estimated 18.0%. Native American/Other residents' share of San Joaquin County's population has remained roughly unchanged at 1.3%.

San Joaquin County is more Native American/Other than neighboring Stanislaus County (1.2% Native American/Other). San Joaquin County is less Native American/Other than neighboring Sacramento County (2% Native American/Other), Contra Costa County (1.4% Native American/Other), Alameda County (1.6% Native American/Other), and Solano County (2% Native American/Other).

San Joaquin County's Multiracial Population

36,801 residents of San Joaquin County, or 4.6% of the population, identify as Multiracial. The share of Multiracial residents in San Joaquin County is comparable to the share in California overall, where 4.4% of the population is Multiracial. San Joaquin County ranks 37th statewide in terms of Multiracial residents as a share of the population, out of 58 counties.

Since the 2020 Census, San Joaquin County's Multiracial population has grown by an estimated 7.9%. Multiracial residents' share of San Joaquin County's population has remained roughly unchanged at 4.6%.

San Joaquin County is more Multiracial than neighboring Stanislaus County (4% Multiracial). San Joaquin County is less Multiracial than neighboring Sacramento County (6.7% Multiracial), Contra Costa County (6.3% Multiracial), Alameda County (5.6% Multiracial), and Solano County (6.9% 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.