Nantucket County Demographics

A map of Nantucket County's Population by Race

Race	2024 Pop	2020 Pop	2024 %	2020 %
White	9,879	9,889	68.2%	69.4%
Hispanic	2,467	2,312	17.0%	16.2%
Black	1,361	1,006	9.4%	7.1%
Multiracial	390	615	2.7%	4.3%
Asian	251	263	1.7%	1.8%
Native American/Other	135	170	0.9%	1.2%

Nantucket County, Massachusetts has an estimated population of 14,483, a slight increase from the 14,255 recorded in the 2020 Census. The population is 68.2% White, 17.0% Hispanic, 9.4% Black, 2.7% Multiracial, 1.7% Asian, and 0.9% Native American/Other. This demographic dot map shows the population of Nantucket County, with one dot drawn for each person counted by the Census, color-coded by race.

Nantucket has become more racially diverse since the 2020 Census. It is less diverse than Massachusetts overall. Demographers use a diversity index to measure the probability that two randomly selected individuals belong to different racial or ethnic groups. In Nantucket County, that probability was 48.5% in 2020 and 49.6% in the most recent ACS estimates.

Nantucket County is ranked the 14th most populous county in Massachusetts, out of 14 counties. Nantucket County was ranked the 14th most populous county in the 2020 Census.

Nantucket County's White Population

9,879 residents of Nantucket County, or 68.2% of the population, identify as White. The share of White residents in Nantucket County is comparable to the share in Massachusetts overall, where 66.6% of the population is White. Nantucket County ranks 10th statewide in terms of White residents as a share of the population, out of 14 counties.

Since the 2020 Census, Nantucket County's White population has remained roughly the same. White residents' share of Nantucket County's population has decreased from 69.4% to 68.2%.

Nantucket County is less White than neighboring Barnstable County (85.2% White), Dukes County (80% White), Plymouth County (76.1% White), Bristol County (75.3% White), and Newport County (82.4% White).

Nantucket County's Black Population

1,361 residents of Nantucket County, or 9.4% of the population, identify as Black. The share of Black residents in Nantucket County is slightly higher than in Massachusetts overall, where 6.4% of the population is Black. Nantucket County ranks 4th statewide in terms of Black residents as a share of the population, out of 14 counties.

Since the 2020 Census, Nantucket County's Black population has grown by an estimated 35.3%. Black residents' share of Nantucket County's population has increased from 7.1% to 9.4%.

Nantucket County is more Black than neighboring Barnstable County (2.8% Black), Dukes County (2.7% Black), Plymouth County (7.8% Black), Bristol County (4% Black), and Newport County (3.2% Black).

Nantucket County's Asian Population

251 residents of Nantucket County, or 1.7% of the population, identify as Asian. The share of Asian residents in Nantucket County is lower than in Massachusetts overall, where 7.3% of the population is Asian. Nantucket County ranks 9th statewide in terms of Asian residents as a share of the population, out of 14 counties.

Since the 2020 Census, Nantucket County's Asian population has declined by an estimated 4.6%. Asian residents' share of Nantucket County's population has remained roughly unchanged at 1.7%.

Nantucket County is more Asian than neighboring Barnstable County (1.5% Asian), and Dukes County (1.5% Asian). Nantucket County is less Asian than neighboring Bristol County (2.4% Asian).

Nantucket County's Hispanic Population

2,467 residents of Nantucket County, or 17.0% of the population, identify as Hispanic. The share of Hispanic residents in Nantucket County is slightly higher than in Massachusetts overall, where 13.3% of the population is Hispanic. Nantucket County ranks 4th statewide in terms of Hispanic residents as a share of the population, out of 14 counties.

Since the 2020 Census, Nantucket County's Hispanic population has grown by an estimated 6.7%. Hispanic residents' share of Nantucket County's population has increased from 16.2% to 17.0%.

Nantucket County is more Hispanic than neighboring Barnstable County (3.7% Hispanic), Dukes County (3.3% Hispanic), Plymouth County (4.9% Hispanic), Bristol County (10.2% Hispanic), and Newport County (6.7% Hispanic).

Nantucket County's Native American/Other Population

135 residents of Nantucket County, or 0.9% of the population, identify as American Indian/Alaska Native/Native Hawaiian/Pacific Islander/Other. The share of Native American/Other residents in Nantucket County is comparable to the share in Massachusetts overall, where 1.3% of the population is Native American/Other. Nantucket County ranks 8th statewide in terms of Native American/Other residents as a share of the population, out of 14 counties.

Since the 2020 Census, Nantucket County's Native American/Other population has declined by an estimated 20.6%. Native American/Other residents' share of Nantucket County's population has remained roughly unchanged at 0.9%.

Nantucket County is less Native American/Other than neighboring Barnstable County (1.7% Native American/Other), Dukes County (3.9% Native American/Other), Plymouth County (2.8% Native American/Other), Bristol County (1.8% Native American/Other), and Newport County (1.2% Native American/Other).

Nantucket County's Multiracial Population

390 residents of Nantucket County, or 2.7% of the population, identify as Multiracial. The share of Multiracial residents in Nantucket County is slightly lower than in Massachusetts overall, where 5.1% of the population is Multiracial. Nantucket County ranks 11th statewide in terms of Multiracial residents as a share of the population, out of 14 counties.

Since the 2020 Census, Nantucket County's Multiracial population has declined by an estimated 36.6%. Multiracial residents' share of Nantucket County's population has decreased from 4.3% to 2.7%.

Nantucket County is less Multiracial than neighboring Barnstable County (5.2% Multiracial), Dukes County (8.6% Multiracial), Plymouth County (6.8% Multiracial), Bristol County (6.2% Multiracial), and Newport County (4.9% 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.