Chelsea, SD Demographics

A map of Chelsea's Population by Race

Race	2024 Pop	2020 Pop	2024 %	2020 %
White	61	16	100.0%	84.2%
Black	0	0	0.0%	0.0%
Asian	0	1	0.0%	5.3%
Hispanic	0	1	0.0%	5.3%
Native American/Other	0	0	0.0%	0.0%
Multiracial	0	1	0.0%	5.3%

Chelsea, South Dakota has an estimated population of 61, a dramatic increase from the 19 recorded in the 2020 Census. The population is 100.0% White, 0.0% Black, 0.0% Asian, 0.0% Hispanic, 0.0% Native American/Other, and 0.0% Multiracial. This demographic dot map shows the population of Chelsea, with one dot drawn for each person counted by the Census, color-coded by race.

Chelsea has become considerably less racially diverse since the 2020 Census. It is considerably less diverse than South Dakota overall. Demographers use a diversity index to measure the probability that two randomly selected individuals belong to different racial or ethnic groups. In Chelsea, that probability was 28.2% in 2020 and 0.0% in the most recent ACS estimates.

Chelsea is ranked the 363rd most populous place in South Dakota, out of 485 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). Chelsea was ranked the 439th most populous place in the 2020 Census.

Chelsea's White Population

61 residents of Chelsea, or 100.0% of the population, identify as White. The share of White residents in Chelsea is significantly higher than in South Dakota overall, where 79.8% of the population is White. Chelsea ranks 332nd statewide in terms of White residents as a share of the population, out of 485 places.

Since the 2020 Census, Chelsea's White population has grown by an estimated 281.3%. White residents' share of Chelsea's population has increased from 84.2% to 100.0%.

Chelsea is more White than neighboring Cresbard (70.5% White), Mellette (98.5% White), and Rockham (94.6% White).

Chelsea's Black Population

0 residents of Chelsea, or 0.0% of the population, identify as Black. The share of Black residents in Chelsea is slightly lower than in South Dakota overall, where 2.1% of the population is Black. Chelsea ranks 183rd statewide in terms of Black residents as a share of the population, out of 485 places.

Since the 2020 Census, Chelsea's Black population has grown from 0 to an estimated 0. Black residents' share of Chelsea's population has remained roughly unchanged at 0.0%.

Chelsea's Asian Population

0 residents of Chelsea, or 0.0% of the population, identify as Asian. The share of Asian residents in Chelsea is comparable to the share in South Dakota overall, where 1.4% of the population is Asian. Chelsea ranks 5th statewide in terms of Asian residents as a share of the population, out of 485 places.

Since the 2020 Census, Chelsea's Asian population has declined by an estimated 100.0%. Asian residents' share of Chelsea's population has decreased from 5.3% to 0.0%.

Chelsea is less Asian than neighboring Cresbard (4.1% Asian).

Chelsea's Hispanic Population

0 residents of Chelsea, or 0.0% of the population, identify as Hispanic. The share of Hispanic residents in Chelsea is slightly lower than in South Dakota overall, where 4.8% of the population is Hispanic. Chelsea ranks 87th statewide in terms of Hispanic residents as a share of the population, out of 485 places.

Since the 2020 Census, Chelsea's Hispanic population has declined by an estimated 100.0%. Hispanic residents' share of Chelsea's population has decreased from 5.3% to 0.0%.

Chelsea is less Hispanic than neighboring Cresbard (23% Hispanic).

Chelsea's Native American/Other Population

0 residents of Chelsea, 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 Chelsea is lower than in South Dakota overall, where 7.5% of the population is Native American/Other. Chelsea ranks 345th statewide in terms of Native American/Other residents as a share of the population, out of 485 places.

Since the 2020 Census, Chelsea's Native American/Other population has grown from 0 to an estimated 0. Native American/Other residents' share of Chelsea's population has remained roughly unchanged at 0.0%.

Chelsea is less Native American/Other than neighboring Mellette (1.5% Native American/Other).

Chelsea's Multiracial Population

0 residents of Chelsea, or 0.0% of the population, identify as Multiracial. The share of Multiracial residents in Chelsea is slightly lower than in South Dakota overall, where 4.4% of the population is Multiracial. Chelsea ranks 100th statewide in terms of Multiracial residents as a share of the population, out of 485 places.

Since the 2020 Census, Chelsea's Multiracial population has declined by an estimated 100.0%. Multiracial residents' share of Chelsea's population has decreased from 5.3% to 0.0%.

Chelsea is less Multiracial than neighboring Cresbard (2.5% Multiracial), and Rockham (5.4% 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.