Martinez, CA Demographics

A map of Martinez's Population by Race

Race	2024 Pop	2020 Pop	2024 %	2020 %
White	21,746	22,558	58.9%	60.5%
Hispanic	7,469	6,670	20.2%	17.9%
Asian	3,678	3,746	10.0%	10.0%
Multiracial	2,997	2,620	8.1%	7.0%
Black	813	1,314	2.2%	3.5%
Native American/Other	200	379	0.5%	1.0%

Martinez, California has an estimated population of 36,903, a slight decrease from the 37,287 recorded in the 2020 Census. The population is 58.9% White, 20.2% Hispanic, 10.0% Asian, 8.1% Multiracial, 2.2% Black, and 0.5% Native American/Other. This demographic dot map shows the population of Martinez, with one dot drawn for each person counted by the Census, color-coded by race.

Martinez has become slightly 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 Martinez, that probability was 58.6% in 2020 and 59.5% in the most recent ACS estimates.

Martinez is ranked the 231st 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). Martinez was ranked the 229th most populous place in the 2020 Census.

Martinez's White Population

21,746 residents of Martinez, or 58.9% of the population, identify as White. The share of White residents in Martinez is significantly higher than in California overall, where 33.8% of the population is White. Martinez ranks 763rd statewide in terms of White residents as a share of the population, out of 1,618 places.

Since the 2020 Census, Martinez's White population has declined by an estimated 3.6%. White residents' share of Martinez's population has decreased from 60.5% to 58.9%.

Martinez is more White than neighboring Vine Hill (51.9% White), Pacheco (53% White), and Pleasant Hill (55.4% White). Martinez is less White than neighboring Mountain View (60.3% White), and Alhambra Valley (70.1% White).

Martinez's Black Population

813 residents of Martinez, or 2.2% of the population, identify as Black. The share of Black residents in Martinez is slightly lower than in California overall, where 5.2% of the population is Black. Martinez ranks 278th statewide in terms of Black residents as a share of the population, out of 1,618 places.

Since the 2020 Census, Martinez's Black population has declined by an estimated 38.1%. Black residents' share of Martinez's population has decreased from 3.5% to 2.2%.

Martinez is more Black than neighboring Mountain View (1.6% Black). Martinez is less Black than neighboring Vine Hill (7.3% Black), Alhambra Valley (11.7% Black), Pacheco (7.5% Black), and Pleasant Hill (4% Black).

Martinez's Asian Population

3,678 residents of Martinez, or 10.0% of the population, identify as Asian. The share of Asian residents in Martinez is lower than in California overall, where 15.3% of the population is Asian. Martinez ranks 304th statewide in terms of Asian residents as a share of the population, out of 1,618 places.

Since the 2020 Census, Martinez's Asian population has declined by an estimated 1.8%. Asian residents' share of Martinez's population has remained roughly unchanged at 10.0%.

Martinez is more Asian than neighboring Mountain View (8.2% Asian), Vine Hill (6.9% Asian), and Alhambra Valley (4% Asian). Martinez is less Asian than neighboring Pacheco (10.7% Asian), and Pleasant Hill (16.6% Asian).

Martinez's Hispanic Population

7,469 residents of Martinez, or 20.2% of the population, identify as Hispanic. The share of Hispanic residents in Martinez is significantly lower than in California overall, where 40.2% of the population is Hispanic. Martinez ranks 933rd statewide in terms of Hispanic residents as a share of the population, out of 1,618 places.

Since the 2020 Census, Martinez's Hispanic population has grown by an estimated 12.0%. Hispanic residents' share of Martinez's population has increased from 17.9% to 20.2%.

Martinez is more Hispanic than neighboring Alhambra Valley (0.9% Hispanic), and Pleasant Hill (14.7% Hispanic). Martinez is less Hispanic than neighboring Mountain View (25.4% Hispanic), Vine Hill (23.9% Hispanic), and Pacheco (20.4% Hispanic).

Martinez's Native American/Other Population

200 residents of Martinez, or 0.5% of the population, identify as American Indian/Alaska Native/Native Hawaiian/Pacific Islander/Other. The share of Native American/Other residents in Martinez is comparable to the share in California overall, where 1.2% of the population is Native American/Other. Martinez ranks 1006th statewide in terms of Native American/Other residents as a share of the population, out of 1,618 places.

Since the 2020 Census, Martinez's Native American/Other population has declined by an estimated 47.2%. Native American/Other residents' share of Martinez's population has decreased from 1.0% to 0.5%.

Martinez is more Native American/Other than neighboring Mountain View (0% Native American/Other), Alhambra Valley (0% Native American/Other), and Pacheco (0.1% Native American/Other). Martinez is less Native American/Other than neighboring Vine Hill (0.6% Native American/Other), and Pleasant Hill (1.6% Native American/Other).

Martinez's Multiracial Population

2,997 residents of Martinez, or 8.1% of the population, identify as Multiracial. The share of Multiracial residents in Martinez is slightly higher than in California overall, where 4.4% of the population is Multiracial. Martinez ranks 263rd statewide in terms of Multiracial residents as a share of the population, out of 1,618 places.

Since the 2020 Census, Martinez's Multiracial population has grown by an estimated 14.4%. Multiracial residents' share of Martinez's population has increased from 7.0% to 8.1%.

Martinez is more Multiracial than neighboring Mountain View (4.5% Multiracial), and Pleasant Hill (7.8% Multiracial). Martinez is less Multiracial than neighboring Vine Hill (9.4% Multiracial), Alhambra Valley (13.3% Multiracial), and Pacheco (8.3% 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.