Mill Plain, CT Demographics

A map of Mill Plain's Population by Race

Mill Plain, Connecticut has an estimated population of 2,033, a large increase from the 1,654 recorded in the 2020 Census. The population is 91.4% White, 6.1% Hispanic, 1.8% Multiracial, 0.6% Asian, 0.0% Black, and 0.0% Native American/Other. This demographic dot map shows the population of Mill Plain, with one dot drawn for each person counted by the Census, color-coded by race.

Mill Plain has become considerably less racially diverse since the 2020 Census. It is considerably less diverse than Connecticut overall. Demographers use a diversity index to measure the probability that two randomly selected individuals belong to different racial or ethnic groups. In Mill Plain, that probability was 21.9% in 2020 and 16.0% in the most recent ACS estimates.

Mill Plain is ranked the 120th most populous place in Connecticut, out of 215 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). Mill Plain was ranked the 132nd most populous place in the 2020 Census.

Mill Plain's White Population

1,859 residents of Mill Plain, or 91.4% of the population, identify as White. The share of White residents in Mill Plain is significantly higher than in Connecticut overall, where 61.9% of the population is White. Mill Plain ranks 46th statewide in terms of White residents as a share of the population, out of 215 places.

Since the 2020 Census, Mill Plain's White population has grown by an estimated 27.5%. White residents' share of Mill Plain's population has increased from 88.1% to 91.4%.

Mill Plain is more White than neighboring Fairfield University (88.7% White), Murray (88.5% White), Staples (74.8% White), and Greens Farms (70.1% White). Mill Plain is less White than neighboring Southport (94.8% White).

Mill Plain's Black Population

0 residents of Mill Plain, or 0.0% of the population, identify as Black. The share of Black residents in Mill Plain is lower than in Connecticut overall, where 9.8% of the population is Black. Mill Plain ranks 191st statewide in terms of Black residents as a share of the population, out of 215 places.

Since the 2020 Census, Mill Plain's Black population has declined by an estimated 100.0%. Black residents' share of Mill Plain's population has decreased from 0.5% to 0.0%.

Mill Plain is less Black than neighboring Fairfield University (1.8% Black), Southport (0.4% Black), Staples (1.9% Black), and Greens Farms (1.8% Black).

Mill Plain's Asian Population

12 residents of Mill Plain, or 0.6% of the population, identify as Asian. The share of Asian residents in Mill Plain is slightly lower than in Connecticut overall, where 4.7% of the population is Asian. Mill Plain ranks 97th statewide in terms of Asian residents as a share of the population, out of 215 places.

Since the 2020 Census, Mill Plain's Asian population has declined by an estimated 76.0%. Asian residents' share of Mill Plain's population has decreased from 3.0% to 0.6%.

Mill Plain is less Asian than neighboring Fairfield University (2.4% Asian), Southport (0.9% Asian), Murray (10.3% Asian), Staples (9.9% Asian), and Greens Farms (3.4% Asian).

Mill Plain's Hispanic Population

125 residents of Mill Plain, or 6.1% of the population, identify as Hispanic. The share of Hispanic residents in Mill Plain is considerably lower than in Connecticut overall, where 18.3% of the population is Hispanic. Mill Plain ranks 184th statewide in terms of Hispanic residents as a share of the population, out of 215 places.

Since the 2020 Census, Mill Plain's Hispanic population has grown by an estimated 98.4%. Hispanic residents' share of Mill Plain's population has increased from 3.8% to 6.1%.

Mill Plain is more Hispanic than neighboring Fairfield University (5.4% Hispanic), Southport (2.1% Hispanic), and Murray (1.2% Hispanic). Mill Plain is less Hispanic than neighboring Staples (8.7% Hispanic), and Greens Farms (22.6% Hispanic).

Mill Plain's Native American/Other Population

0 residents of Mill Plain, 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 Mill Plain is comparable to the share in Connecticut overall, where 1% of the population is Native American/Other. Mill Plain ranks 57th statewide in terms of Native American/Other residents as a share of the population, out of 215 places.

Since the 2020 Census, Mill Plain's Native American/Other population has declined by an estimated 100.0%. Native American/Other residents' share of Mill Plain's population has decreased from 0.8% to 0.0%.

Mill Plain is less Native American/Other than neighboring Staples (0.4% Native American/Other), and Greens Farms (0.1% Native American/Other).

Mill Plain's Multiracial Population

37 residents of Mill Plain, or 1.8% of the population, identify as Multiracial. The share of Multiracial residents in Mill Plain is slightly lower than in Connecticut overall, where 4.3% of the population is Multiracial. Mill Plain ranks 112th statewide in terms of Multiracial residents as a share of the population, out of 215 places.

Since the 2020 Census, Mill Plain's Multiracial population has declined by an estimated 39.3%. Multiracial residents' share of Mill Plain's population has decreased from 3.7% to 1.8%.

Mill Plain is more Multiracial than neighboring Fairfield University (1.7% Multiracial), Southport (1.7% Multiracial), and Murray (0% Multiracial). Mill Plain is less Multiracial than neighboring Staples (4.3% Multiracial), and Greens Farms (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.