Dennis, MA Demographics

A map of Dennis's Population by Race

Race	2024 Pop	2020 Pop	2024 %	2020 %
White	2,202	2,225	90.8%	92.7%
Hispanic	206	38	8.5%	1.6%
Multiracial	16	64	0.7%	2.7%
Black	0	37	0.0%	1.5%
Asian	0	23	0.0%	1.0%
Native American/Other	0	12	0.0%	0.5%

Dennis, Massachusetts has an estimated population of 2,424, a slight increase from the 2,399 recorded in the 2020 Census. The population is 90.8% White, 8.5% Hispanic, 0.7% Multiracial, 0.0% Black, 0.0% Asian, and 0.0% Native American/Other. This demographic dot map shows the population of Dennis, with one dot drawn for each person counted by the Census, color-coded by race.

Dennis has become more racially diverse since the 2020 Census. It is considerably 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 Dennis, that probability was 13.9% in 2020 and 16.8% in the most recent ACS estimates.

Dennis is ranked the 172nd most populous place in Massachusetts, out of 248 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). Dennis was ranked the 174th most populous place in the 2020 Census.

Dennis's White Population

2,202 residents of Dennis, or 90.8% of the population, identify as White. The share of White residents in Dennis is significantly higher than in Massachusetts overall, where 66.6% of the population is White. Dennis ranks 25th statewide in terms of White residents as a share of the population, out of 248 places.

Since the 2020 Census, Dennis's White population has declined by an estimated 1.0%. White residents' share of Dennis's population has decreased from 92.7% to 90.8%.

Dennis is more White than neighboring South Yarmouth (76.5% White), and West Dennis (73.6% White). Dennis is less White than neighboring Yarmouth Port (93% White), East Dennis (96.4% White), and South Dennis (91.4% White).

Dennis's Black Population

0 residents of Dennis, or 0.0% of the population, identify as Black. The share of Black residents in Dennis is lower than in Massachusetts overall, where 6.4% of the population is Black. Dennis ranks 138th statewide in terms of Black residents as a share of the population, out of 248 places.

Since the 2020 Census, Dennis's Black population has declined by an estimated 100.0%. Black residents' share of Dennis's population has decreased from 1.5% to 0.0%.

Dennis is less Black than neighboring Yarmouth Port (0.3% Black), South Dennis (4.7% Black), South Yarmouth (7.3% Black), and West Dennis (2.2% Black).

Dennis's Asian Population

0 residents of Dennis, or 0.0% of the population, identify as Asian. The share of Asian residents in Dennis is lower than in Massachusetts overall, where 7.3% of the population is Asian. Dennis ranks 185th statewide in terms of Asian residents as a share of the population, out of 248 places.

Since the 2020 Census, Dennis's Asian population has declined by an estimated 100.0%. Asian residents' share of Dennis's population has decreased from 1.0% to 0.0%.

Dennis is less Asian than neighboring Yarmouth Port (0.6% Asian), South Dennis (0.5% Asian), and South Yarmouth (4.2% Asian).

Dennis's Hispanic Population

206 residents of Dennis, or 8.5% of the population, identify as Hispanic. The share of Hispanic residents in Dennis is slightly lower than in Massachusetts overall, where 13.3% of the population is Hispanic. Dennis ranks 235th statewide in terms of Hispanic residents as a share of the population, out of 248 places.

Since the 2020 Census, Dennis's Hispanic population has grown by an estimated 442.1%. Hispanic residents' share of Dennis's population has increased from 1.6% to 8.5%.

Dennis is more Hispanic than neighboring Yarmouth Port (3.3% Hispanic), East Dennis (0.4% Hispanic), South Dennis (0.4% Hispanic), and South Yarmouth (2.6% Hispanic). Dennis is less Hispanic than neighboring West Dennis (22.8% Hispanic).

Dennis's Native American/Other Population

0 residents of Dennis, or 0.0% of the population, identify as American Indian/Alaska Native/Native Hawaiian/Pacific Islander/Other. The share of Native American/Other residents in Dennis is comparable to the share in Massachusetts overall, where 1.3% of the population is Native American/Other. Dennis ranks 203rd statewide in terms of Native American/Other residents as a share of the population, out of 248 places.

Since the 2020 Census, Dennis's Native American/Other population has declined by an estimated 100.0%. Native American/Other residents' share of Dennis's population has decreased from 0.5% to 0.0%.

Dennis is less Native American/Other than neighboring South Dennis (3% Native American/Other), South Yarmouth (1.9% Native American/Other), and West Dennis (0.6% Native American/Other).

Dennis's Multiracial Population

16 residents of Dennis, or 0.7% of the population, identify as Multiracial. The share of Multiracial residents in Dennis is slightly lower than in Massachusetts overall, where 5.1% of the population is Multiracial. Dennis ranks 223rd statewide in terms of Multiracial residents as a share of the population, out of 248 places.

Since the 2020 Census, Dennis's Multiracial population has declined by an estimated 75.0%. Multiracial residents' share of Dennis's population has decreased from 2.7% to 0.7%.

Dennis is more Multiracial than neighboring South Dennis (0% Multiracial). Dennis is less Multiracial than neighboring Yarmouth Port (2.9% Multiracial), East Dennis (3.1% Multiracial), and South Yarmouth (7.6% 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.