Onida, SD Demographics

A map of Onida's Population by Race

Race	2024 Pop	2020 Pop	2024 %	2020 %
White	606	601	94.1%	90.2%
Multiracial	27	31	4.2%	4.7%
Black	11	1	1.7%	0.2%
Asian	0	5	0.0%	0.8%
Hispanic	0	22	0.0%	3.3%
Native American/Other	0	6	0.0%	0.9%

Onida, South Dakota has an estimated population of 644, a decrease from the 666 recorded in the 2020 Census. The population is 94.1% White, 4.2% Multiracial, 1.7% Black, 0.0% Asian, 0.0% Hispanic, and 0.0% Native American/Other. This demographic dot map shows the population of Onida, with one dot drawn for each person counted by the Census, color-coded by race.

Onida 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 Onida, that probability was 18.2% in 2020 and 11.3% in the most recent ACS estimates.

Onida is ranked the 129th 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). Onida was ranked the 113th most populous place in the 2020 Census.

Onida's White Population

606 residents of Onida, or 94.1% of the population, identify as White. The share of White residents in Onida is considerably higher than in South Dakota overall, where 79.8% of the population is White. Onida ranks 235th statewide in terms of White residents as a share of the population, out of 485 places.

Since the 2020 Census, Onida's White population has remained roughly the same. White residents' share of Onida's population has increased from 90.2% to 94.1%.

Onida is more White than neighboring Agar (74.1% White), Blunt (90.3% White), and Gettysburg (88.7% White). Onida is less White than neighboring Oahe Acres (100% White), and Harrold (97.2% White).

Onida's Black Population

11 residents of Onida, or 1.7% of the population, identify as Black. The share of Black residents in Onida is comparable to the share in South Dakota overall, where 2.1% of the population is Black. Onida ranks 165th statewide in terms of Black residents as a share of the population, out of 485 places.

Since the 2020 Census, Onida's Black population has grown by an estimated 1000.0%. Black residents' share of Onida's population has increased from 0.2% to 1.7%.

Onida is more Black than neighboring Agar (0% Black), Blunt (0% Black), Oahe Acres (0% Black), and Harrold (1.4% Black). Onida is less Black than neighboring Gettysburg (2.9% Black).

Onida's Asian Population

0 residents of Onida, or 0.0% of the population, identify as Asian. The share of Asian residents in Onida is comparable to the share in South Dakota overall, where 1.4% of the population is Asian. Onida ranks 72nd statewide in terms of Asian residents as a share of the population, out of 485 places.

Since the 2020 Census, Onida's Asian population has declined by an estimated 100.0%. Asian residents' share of Onida's population has decreased from 0.8% to 0.0%.

Onida is less Asian than neighboring Gettysburg (1.2% Asian).

Onida's Hispanic Population

0 residents of Onida, or 0.0% of the population, identify as Hispanic. The share of Hispanic residents in Onida is slightly lower than in South Dakota overall, where 4.8% of the population is Hispanic. Onida ranks 168th statewide in terms of Hispanic residents as a share of the population, out of 485 places.

Since the 2020 Census, Onida's Hispanic population has declined by an estimated 100.0%. Hispanic residents' share of Onida's population has decreased from 3.3% to 0.0%.

Onida is less Hispanic than neighboring Blunt (5.6% Hispanic).

Onida's Native American/Other Population

0 residents of Onida, 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 Onida is lower than in South Dakota overall, where 7.5% of the population is Native American/Other. Onida ranks 295th statewide in terms of Native American/Other residents as a share of the population, out of 485 places.

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

Onida is less Native American/Other than neighboring Blunt (0.5% Native American/Other), and Gettysburg (2.9% Native American/Other).

Onida's Multiracial Population

27 residents of Onida, or 4.2% of the population, identify as Multiracial. The share of Multiracial residents in Onida is comparable to the share in South Dakota overall, where 4.4% of the population is Multiracial. Onida ranks 128th statewide in terms of Multiracial residents as a share of the population, out of 485 places.

Since the 2020 Census, Onida's Multiracial population has declined by an estimated 12.9%. Multiracial residents' share of Onida's population has decreased from 4.7% to 4.2%.

Onida is more Multiracial than neighboring Blunt (3.7% Multiracial), Oahe Acres (0% Multiracial), and Harrold (1.4% Multiracial). Onida is less Multiracial than neighboring Agar (25.9% 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.