Colchester, CT Demographics

A map of Colchester's Population by Race

Race	2024 Pop	2020 Pop	2024 %	2020 %
White	4,168	4,010	88.8%	85.3%
Hispanic	169	266	3.6%	5.7%
Asian	127	92	2.7%	2.0%
Multiracial	116	196	2.5%	4.2%
Black	85	97	1.8%	2.1%
Native American/Other	27	39	0.6%	0.8%

Colchester, Connecticut has an estimated population of 4,692, a less than 1% change from the 4,700 recorded in the 2020 Census. The population is 88.8% White, 3.6% Hispanic, 2.7% Asian, 2.5% Multiracial, 1.8% Black, and 0.6% Native American/Other. This demographic dot map shows the population of Colchester, with one dot drawn for each person counted by the Census, color-coded by race.

Colchester 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 Colchester, that probability was 26.6% in 2020 and 20.8% in the most recent ACS estimates.

Colchester is ranked the 68th 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). Colchester was ranked the 69th most populous place in the 2020 Census.

Colchester's White Population

4,168 residents of Colchester, or 88.8% of the population, identify as White. The share of White residents in Colchester is significantly higher than in Connecticut overall, where 61.9% of the population is White. Colchester ranks 77th statewide in terms of White residents as a share of the population, out of 215 places.

Since the 2020 Census, Colchester's White population has grown by an estimated 3.9%. White residents' share of Colchester's population has increased from 85.3% to 88.8%.

Colchester is more White than neighboring Lake Pocotopaug (87.8% White), and South Windham (68.3% White). Colchester is less White than neighboring Moodus (90.4% White), Terramuggus (93.9% White), and East Hampton (95.5% White).

Colchester's Black Population

85 residents of Colchester, or 1.8% of the population, identify as Black. The share of Black residents in Colchester is lower than in Connecticut overall, where 9.8% of the population is Black. Colchester ranks 86th statewide in terms of Black residents as a share of the population, out of 215 places.

Since the 2020 Census, Colchester's Black population has declined by an estimated 12.4%. Black residents' share of Colchester's population has remained roughly unchanged at 1.8%.

Colchester is more Black than neighboring Moodus (0% Black), Terramuggus (1.2% Black), East Hampton (1.3% Black), Lake Pocotopaug (0% Black), and South Windham (1.6% Black).

Colchester's Asian Population

127 residents of Colchester, or 2.7% of the population, identify as Asian. The share of Asian residents in Colchester is comparable to the share in Connecticut overall, where 4.7% of the population is Asian. Colchester ranks 138th statewide in terms of Asian residents as a share of the population, out of 215 places.

Since the 2020 Census, Colchester's Asian population has grown by an estimated 38.0%. Asian residents' share of Colchester's population has increased from 2.0% to 2.7%.

Colchester is more Asian than neighboring Moodus (0% Asian), Terramuggus (1.2% Asian), East Hampton (0% Asian), and South Windham (0.2% Asian). Colchester is less Asian than neighboring Lake Pocotopaug (8.6% Asian).

Colchester's Hispanic Population

169 residents of Colchester, or 3.6% of the population, identify as Hispanic. The share of Hispanic residents in Colchester is considerably lower than in Connecticut overall, where 18.3% of the population is Hispanic. Colchester ranks 144th statewide in terms of Hispanic residents as a share of the population, out of 215 places.

Since the 2020 Census, Colchester's Hispanic population has declined by an estimated 36.5%. Hispanic residents' share of Colchester's population has decreased from 5.7% to 3.6%.

Colchester is more Hispanic than neighboring Terramuggus (0% Hispanic), East Hampton (2.2% Hispanic), and Lake Pocotopaug (2.7% Hispanic). Colchester is less Hispanic than neighboring Moodus (3.7% Hispanic), and South Windham (28.6% Hispanic).

Colchester's Native American/Other Population

27 residents of Colchester, or 0.6% of the population, identify as American Indian/Alaska Native/Native Hawaiian/Pacific Islander/Other. The share of Native American/Other residents in Colchester is comparable to the share in Connecticut overall, where 1% of the population is Native American/Other. Colchester ranks 59th statewide in terms of Native American/Other residents as a share of the population, out of 215 places.

Since the 2020 Census, Colchester's Native American/Other population has declined by an estimated 30.8%. Native American/Other residents' share of Colchester's population has remained roughly unchanged at 0.6%.

Colchester is more Native American/Other than neighboring Moodus (0% Native American/Other), Terramuggus (0% Native American/Other), East Hampton (0.4% Native American/Other), Lake Pocotopaug (0.5% Native American/Other), and South Windham (0% Native American/Other).

Colchester's Multiracial Population

116 residents of Colchester, or 2.5% of the population, identify as Multiracial. The share of Multiracial residents in Colchester is comparable to the share in Connecticut overall, where 4.3% of the population is Multiracial. Colchester ranks 76th statewide in terms of Multiracial residents as a share of the population, out of 215 places.

Since the 2020 Census, Colchester's Multiracial population has declined by an estimated 40.8%. Multiracial residents' share of Colchester's population has decreased from 4.2% to 2.5%.

Colchester is more Multiracial than neighboring East Hampton (0.7% Multiracial), Lake Pocotopaug (0.5% Multiracial), and South Windham (1.3% Multiracial). Colchester is less Multiracial than neighboring Moodus (5.9% Multiracial), and Terramuggus (3.6% 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.