San Martin, CA Demographics

A map of San Martin's Population by Race

San Martin, California has an estimated population of 6,954, a less than 1% change from the 7,008 recorded in the 2020 Census. The population is 44.5% White, 42.6% Hispanic, 6.2% Asian, 3.5% Black, 3.0% Multiracial, and 0.2% Native American/Other. This demographic dot map shows the population of San Martin, with one dot drawn for each person counted by the Census, color-coded by race.

San Martin 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 San Martin, that probability was 60.1% in 2020 and 61.4% in the most recent ACS estimates.

San Martin is ranked the 583rd 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). San Martin was ranked the 575th most populous place in the 2020 Census.

San Martin's White Population

3,098 residents of San Martin, or 44.5% of the population, identify as White. The share of White residents in San Martin is considerably higher than in California overall, where 33.8% of the population is White. San Martin ranks 1059th statewide in terms of White residents as a share of the population, out of 1,618 places.

Since the 2020 Census, San Martin's White population has grown by an estimated 9.3%. White residents' share of San Martin's population has increased from 40.5% to 44.5%.

San Martin is more White than neighboring Morgan Hill (37.3% White), Gilroy (24.3% White), and Interlaken (15.4% White). San Martin is less White than neighboring Aromas (50.2% White), and Corralitos (57.4% White).

San Martin's Black Population

240 residents of San Martin, or 3.5% of the population, identify as Black. The share of Black residents in San Martin is comparable to the share in California overall, where 5.2% of the population is Black. San Martin ranks 1021st statewide in terms of Black residents as a share of the population, out of 1,618 places.

Since the 2020 Census, San Martin's Black population has grown by an estimated 531.6%. Black residents' share of San Martin's population has increased from 0.5% to 3.5%.

San Martin is more Black than neighboring Morgan Hill (2.8% Black), Gilroy (1.8% Black), Interlaken (0.4% Black), Aromas (0.4% Black), and Corralitos (0% Black).

San Martin's Asian Population

429 residents of San Martin, or 6.2% of the population, identify as Asian. The share of Asian residents in San Martin is lower than in California overall, where 15.3% of the population is Asian. San Martin ranks 411th statewide in terms of Asian residents as a share of the population, out of 1,618 places.

Since the 2020 Census, San Martin's Asian population has declined by an estimated 1.6%. Asian residents' share of San Martin's population has remained roughly unchanged at 6.2%.

San Martin is more Asian than neighboring Interlaken (0.9% Asian), Aromas (0% Asian), and Corralitos (0% Asian). San Martin is less Asian than neighboring Morgan Hill (17.1% Asian), and Gilroy (9.3% Asian).

San Martin's Hispanic Population

2,965 residents of San Martin, or 42.6% of the population, identify as Hispanic. The share of Hispanic residents in San Martin is slightly higher than in California overall, where 40.2% of the population is Hispanic. San Martin ranks 412th statewide in terms of Hispanic residents as a share of the population, out of 1,618 places.

Since the 2020 Census, San Martin's Hispanic population has declined by an estimated 11.8%. Hispanic residents' share of San Martin's population has decreased from 48.0% to 42.6%.

San Martin is more Hispanic than neighboring Morgan Hill (35.9% Hispanic), and Corralitos (39.1% Hispanic). San Martin is less Hispanic than neighboring Gilroy (58.9% Hispanic), and Interlaken (82.2% Hispanic).

San Martin's Native American/Other Population

14 residents of San Martin, or 0.2% of the population, identify as American Indian/Alaska Native/Native Hawaiian/Pacific Islander/Other. The share of Native American/Other residents in San Martin is comparable to the share in California overall, where 1.2% of the population is Native American/Other. San Martin ranks 1190th statewide in terms of Native American/Other residents as a share of the population, out of 1,618 places.

Since the 2020 Census, San Martin's Native American/Other population has declined by an estimated 75.9%. Native American/Other residents' share of San Martin's population has decreased from 0.8% to 0.2%.

San Martin is more Native American/Other than neighboring Aromas (0% Native American/Other), and Corralitos (0% Native American/Other). San Martin is less Native American/Other than neighboring Morgan Hill (0.7% Native American/Other), and Gilroy (1.2% Native American/Other).

San Martin's Multiracial Population

208 residents of San Martin, or 3.0% of the population, identify as Multiracial. The share of Multiracial residents in San Martin is comparable to the share in California overall, where 4.4% of the population is Multiracial. San Martin ranks 974th statewide in terms of Multiracial residents as a share of the population, out of 1,618 places.

Since the 2020 Census, San Martin's Multiracial population has declined by an estimated 25.7%. Multiracial residents' share of San Martin's population has decreased from 4.0% to 3.0%.

San Martin is more Multiracial than neighboring Interlaken (0.9% Multiracial). San Martin is less Multiracial than neighboring Morgan Hill (6.2% Multiracial), Gilroy (4.5% Multiracial), Aromas (6.8% Multiracial), and Corralitos (3.5% 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.