South Lancaster, MA Demographics

A map of South Lancaster's Population by Race

South Lancaster, Massachusetts has an estimated population of 2,177, a large increase from the 1,838 recorded in the 2020 Census. The population is 74.3% White, 20.6% Hispanic, 3.8% Multiracial, 1.3% Black, 0.0% Asian, and 0.0% Native American/Other. This demographic dot map shows the population of South Lancaster, with one dot drawn for each person counted by the Census, color-coded by race.

South Lancaster has become slightly 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 Lancaster, that probability was 39.7% in 2020 and 40.4% in the most recent ACS estimates.

South Lancaster is ranked the 181st 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 Lancaster was ranked the 197th most populous place in the 2020 Census.

South Lancaster's White Population

1,618 residents of South Lancaster, or 74.3% of the population, identify as White. The share of White residents in South Lancaster is higher than in Massachusetts overall, where 66.6% of the population is White. South Lancaster ranks 182nd statewide in terms of White residents as a share of the population, out of 248 places.

Since the 2020 Census, South Lancaster's White population has grown by an estimated 14.9%. White residents' share of South Lancaster's population has decreased from 76.6% to 74.3%.

South Lancaster is more White than neighboring Clinton (72.9% White), Leominster (68% White), and Devens (60.5% White). South Lancaster is less White than neighboring Shirley (89% White), and Northborough (78.5% White).

South Lancaster's Black Population

28 residents of South Lancaster, or 1.3% of the population, identify as Black. The share of Black residents in South Lancaster is lower than in Massachusetts overall, where 6.4% of the population is Black. South Lancaster ranks 27th statewide in terms of Black residents as a share of the population, out of 248 places.

Since the 2020 Census, South Lancaster's Black population has declined by an estimated 75.7%. Black residents' share of South Lancaster's population has decreased from 6.3% to 1.3%.

South Lancaster is more Black than neighboring Clinton (1.1% Black). South Lancaster is less Black than neighboring Shirley (3.1% Black), Leominster (4.9% Black), Devens (17.4% Black), and Northborough (2.2% Black).

South Lancaster's Asian Population

0 residents of South Lancaster, or 0.0% of the population, identify as Asian. The share of Asian residents in South Lancaster is lower than in Massachusetts overall, where 7.3% of the population is Asian. South Lancaster ranks 123rd statewide in terms of Asian residents as a share of the population, out of 248 places.

Since the 2020 Census, South Lancaster's Asian population has declined by an estimated 100.0%. Asian residents' share of South Lancaster's population has decreased from 1.7% to 0.0%.

South Lancaster is less Asian than neighboring Clinton (1.7% Asian), Leominster (3.1% Asian), Devens (4% Asian), and Northborough (6.2% Asian).

South Lancaster's Hispanic Population

449 residents of South Lancaster, or 20.6% of the population, identify as Hispanic. The share of Hispanic residents in South Lancaster is higher than in Massachusetts overall, where 13.3% of the population is Hispanic. South Lancaster ranks 42nd statewide in terms of Hispanic residents as a share of the population, out of 248 places.

Since the 2020 Census, South Lancaster's Hispanic population has grown by an estimated 155.1%. Hispanic residents' share of South Lancaster's population has increased from 9.6% to 20.6%.

South Lancaster is more Hispanic than neighboring Clinton (20% Hispanic), Shirley (7.9% Hispanic), Leominster (16% Hispanic), Devens (15% Hispanic), and Northborough (6.2% Hispanic).

South Lancaster's Native American/Other Population

0 residents of South Lancaster, 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 Lancaster is comparable to the share in Massachusetts overall, where 1.3% of the population is Native American/Other. South Lancaster ranks 119th statewide in terms of Native American/Other residents as a share of the population, out of 248 places.

Since the 2020 Census, South Lancaster's Native American/Other population has declined by an estimated 100.0%. Native American/Other residents' share of South Lancaster's population has decreased from 0.9% to 0.0%.

South Lancaster is less Native American/Other than neighboring Clinton (0.7% Native American/Other), Leominster (1.6% Native American/Other), Devens (2.3% Native American/Other), and Northborough (3.3% Native American/Other).

South Lancaster's Multiracial Population

82 residents of South Lancaster, or 3.8% of the population, identify as Multiracial. The share of Multiracial residents in South Lancaster is comparable to the share in Massachusetts overall, where 5.1% of the population is Multiracial. South Lancaster ranks 66th statewide in terms of Multiracial residents as a share of the population, out of 248 places.

Since the 2020 Census, South Lancaster's Multiracial population has declined by an estimated 10.9%. Multiracial residents' share of South Lancaster's population has decreased from 5.0% to 3.8%.

South Lancaster is more Multiracial than neighboring Clinton (3.7% Multiracial), Shirley (0% Multiracial), Devens (0.9% Multiracial), and Northborough (3.6% Multiracial). South Lancaster is less Multiracial than neighboring Leominster (6.4% 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.