Mamaroneck, NY Demographics

A map of Mamaroneck's Population by Race

Mamaroneck, New York has an estimated population of 19,826, a slight decrease from the 20,151 recorded in the 2020 Census. The population is 56.7% White, 27.3% Hispanic, 5.8% Asian, 4.8% Black, 3.7% Multiracial, and 1.8% Native American/Other. This demographic dot map shows the population of Mamaroneck, with one dot drawn for each person counted by the Census, color-coded by race.

Mamaroneck has become more racially diverse since the 2020 Census. It is considerably less diverse than New York overall. Demographers use a diversity index to measure the probability that two randomly selected individuals belong to different racial or ethnic groups. In Mamaroneck, that probability was 56.6% in 2020 and 59.7% in the most recent ACS estimates.

Mamaroneck is ranked the 90th most populous place in New York, out of 1,291 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). Mamaroneck was ranked the 84th most populous place in the 2020 Census.

Mamaroneck's White Population

11,235 residents of Mamaroneck, or 56.7% of the population, identify as White. The share of White residents in Mamaroneck is slightly higher than in New York overall, where 52.8% of the population is White. Mamaroneck ranks 1139th statewide in terms of White residents as a share of the population, out of 1,291 places.

Since the 2020 Census, Mamaroneck's White population has declined by an estimated 6.2%. White residents' share of Mamaroneck's population has decreased from 59.4% to 56.7%.

Mamaroneck is more White than neighboring New Rochelle (41.4% White). Mamaroneck is less White than neighboring Larchmont (86.6% White), Rye (76.4% White), Scarsdale (63.8% White), and Sands Point (81.6% White).

Mamaroneck's Black Population

951 residents of Mamaroneck, or 4.8% of the population, identify as Black. The share of Black residents in Mamaroneck is lower than in New York overall, where 13.4% of the population is Black. Mamaroneck ranks 308th statewide in terms of Black residents as a share of the population, out of 1,291 places.

Since the 2020 Census, Mamaroneck's Black population has grown by an estimated 19.6%. Black residents' share of Mamaroneck's population has increased from 3.9% to 4.8%.

Mamaroneck is more Black than neighboring Larchmont (1.2% Black), Rye (2.1% Black), Scarsdale (1.8% Black), and Sands Point (3.2% Black). Mamaroneck is less Black than neighboring New Rochelle (18.2% Black).

Mamaroneck's Asian Population

1,155 residents of Mamaroneck, or 5.8% of the population, identify as Asian. The share of Asian residents in Mamaroneck is slightly lower than in New York overall, where 9% of the population is Asian. Mamaroneck ranks 247th statewide in terms of Asian residents as a share of the population, out of 1,291 places.

Since the 2020 Census, Mamaroneck's Asian population has grown by an estimated 18.9%. Asian residents' share of Mamaroneck's population has increased from 4.8% to 5.8%.

Mamaroneck is more Asian than neighboring Larchmont (0% Asian), and New Rochelle (5.3% Asian). Mamaroneck is less Asian than neighboring Rye (6.8% Asian), Scarsdale (20.3% Asian), and Sands Point (8.4% Asian).

Mamaroneck's Hispanic Population

5,404 residents of Mamaroneck, or 27.3% of the population, identify as Hispanic. The share of Hispanic residents in Mamaroneck is higher than in New York overall, where 19.8% of the population is Hispanic. Mamaroneck ranks 76th statewide in terms of Hispanic residents as a share of the population, out of 1,291 places.

Since the 2020 Census, Mamaroneck's Hispanic population has declined by an estimated 2.5%. Hispanic residents' share of Mamaroneck's population has remained roughly unchanged at 27.3%.

Mamaroneck is more Hispanic than neighboring Larchmont (6.7% Hispanic), Rye (7% Hispanic), Scarsdale (4.6% Hispanic), and Sands Point (2.8% Hispanic). Mamaroneck is less Hispanic than neighboring New Rochelle (29.9% Hispanic).

Mamaroneck's Native American/Other Population

350 residents of Mamaroneck, or 1.8% of the population, identify as American Indian/Alaska Native/Native Hawaiian/Pacific Islander/Other. The share of Native American/Other residents in Mamaroneck is comparable to the share in New York overall, where 1.2% of the population is Native American/Other. Mamaroneck ranks 321st statewide in terms of Native American/Other residents as a share of the population, out of 1,291 places.

Since the 2020 Census, Mamaroneck's Native American/Other population has grown by an estimated 87.2%. Native American/Other residents' share of Mamaroneck's population has increased from 0.9% to 1.8%.

Mamaroneck is more Native American/Other than neighboring Larchmont (0.7% Native American/Other), Rye (1.3% Native American/Other), New Rochelle (1.2% Native American/Other), Scarsdale (0.9% Native American/Other), and Sands Point (1.6% Native American/Other).

Mamaroneck's Multiracial Population

731 residents of Mamaroneck, or 3.7% of the population, identify as Multiracial. The share of Multiracial residents in Mamaroneck is comparable to the share in New York overall, where 3.8% of the population is Multiracial. Mamaroneck ranks 648th statewide in terms of Multiracial residents as a share of the population, out of 1,291 places.

Since the 2020 Census, Mamaroneck's Multiracial population has grown by an estimated 7.2%. Multiracial residents' share of Mamaroneck's population has remained roughly unchanged at 3.7%.

Mamaroneck is more Multiracial than neighboring Sands Point (2.4% Multiracial). Mamaroneck is less Multiracial than neighboring Larchmont (4.8% Multiracial), Rye (6.3% Multiracial), New Rochelle (3.9% Multiracial), and Scarsdale (8.6% 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.