South Duxbury, MA Demographics

A map of South Duxbury's Population by Race

South Duxbury, Massachusetts has an estimated population of 3,252, a decrease from the 3,463 recorded in the 2020 Census. The population is 89.6% White, 3.8% Asian, 3.3% Multiracial, 3.1% Hispanic, 0.1% Black, and 0.0% Native American/Other. This demographic dot map shows the population of South Duxbury, with one dot drawn for each person counted by the Census, color-coded by race.

South Duxbury 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 South Duxbury, that probability was 15.1% in 2020 and 19.3% in the most recent ACS estimates.

South Duxbury is ranked the 152nd 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). South Duxbury was ranked the 146th most populous place in the 2020 Census.

South Duxbury's White Population

2,915 residents of South Duxbury, or 89.6% of the population, identify as White. The share of White residents in South Duxbury is significantly higher than in Massachusetts overall, where 66.6% of the population is White. South Duxbury ranks 35th statewide in terms of White residents as a share of the population, out of 248 places.

Since the 2020 Census, South Duxbury's White population has declined by an estimated 8.5%. White residents' share of South Duxbury's population has decreased from 92.0% to 89.6%.

South Duxbury is more White than neighboring North Plymouth (67.7% White), and Plymouth (80.6% White). South Duxbury is less White than neighboring Duxbury (89.7% White), Kingston (93.4% White), and Cedar Crest (97.9% White).

South Duxbury's Black Population

3 residents of South Duxbury, or 0.1% of the population, identify as Black. The share of Black residents in South Duxbury is lower than in Massachusetts overall, where 6.4% of the population is Black. South Duxbury ranks 230th statewide in terms of Black residents as a share of the population, out of 248 places.

Since the 2020 Census, South Duxbury's Black population has declined by an estimated 70.0%. Black residents' share of South Duxbury's population has remained roughly unchanged at 0.1%.

South Duxbury is more Black than neighboring Duxbury (0% Black). South Duxbury is less Black than neighboring Kingston (1.7% Black), North Plymouth (2.1% Black), Plymouth (1.1% Black), and Cedar Crest (0.9% Black).

South Duxbury's Asian Population

124 residents of South Duxbury, or 3.8% of the population, identify as Asian. The share of Asian residents in South Duxbury is slightly lower than in Massachusetts overall, where 7.3% of the population is Asian. South Duxbury ranks 174th statewide in terms of Asian residents as a share of the population, out of 248 places.

Since the 2020 Census, South Duxbury's Asian population has grown by an estimated 244.4%. Asian residents' share of South Duxbury's population has increased from 1.0% to 3.8%.

South Duxbury is more Asian than neighboring Kingston (0.2% Asian), North Plymouth (0% Asian), Plymouth (0.6% Asian), and Cedar Crest (1.2% Asian). South Duxbury is less Asian than neighboring Duxbury (8.3% Asian).

South Duxbury's Hispanic Population

102 residents of South Duxbury, or 3.1% of the population, identify as Hispanic. The share of Hispanic residents in South Duxbury is considerably lower than in Massachusetts overall, where 13.3% of the population is Hispanic. South Duxbury ranks 197th statewide in terms of Hispanic residents as a share of the population, out of 248 places.

Since the 2020 Census, South Duxbury's Hispanic population has grown by an estimated 13.3%. Hispanic residents' share of South Duxbury's population has increased from 2.6% to 3.1%.

South Duxbury is more Hispanic than neighboring Duxbury (0.4% Hispanic), Kingston (0.3% Hispanic), and Cedar Crest (0% Hispanic). South Duxbury is less Hispanic than neighboring North Plymouth (6.2% Hispanic), and Plymouth (6% Hispanic).

South Duxbury's Native American/Other Population

0 residents of South Duxbury, 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 South Duxbury is comparable to the share in Massachusetts overall, where 1.3% of the population is Native American/Other. South Duxbury ranks 214th statewide in terms of Native American/Other residents as a share of the population, out of 248 places.

Since the 2020 Census, South Duxbury's Native American/Other population has declined by an estimated 100.0%. Native American/Other residents' share of South Duxbury's population has remained roughly unchanged at 0.0%.

South Duxbury is less Native American/Other than neighboring Kingston (0.1% Native American/Other), North Plymouth (13.6% Native American/Other), and Plymouth (4.6% Native American/Other).

South Duxbury's Multiracial Population

108 residents of South Duxbury, or 3.3% of the population, identify as Multiracial. The share of Multiracial residents in South Duxbury is comparable to the share in Massachusetts overall, where 5.1% of the population is Multiracial. South Duxbury ranks 153rd statewide in terms of Multiracial residents as a share of the population, out of 248 places.

Since the 2020 Census, South Duxbury's Multiracial population has declined by an estimated 14.3%. Multiracial residents' share of South Duxbury's population has remained roughly unchanged at 3.3%.

South Duxbury is more Multiracial than neighboring Duxbury (1.6% Multiracial), and Cedar Crest (0% Multiracial). South Duxbury is less Multiracial than neighboring Kingston (4.4% Multiracial), North Plymouth (10.3% Multiracial), and Plymouth (7.2% 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.