Oacoma, SD Demographics

A map of Oacoma's Population by Race

Oacoma, South Dakota has an estimated population of 548, a dramatic increase from the 386 recorded in the 2020 Census. The population is 95.8% White, 2.2% Native American/Other, 2.0% Hispanic, 0.0% Black, 0.0% Asian, and 0.0% Multiracial. This demographic dot map shows the population of Oacoma, with one dot drawn for each person counted by the Census, color-coded by race.

Oacoma 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 Oacoma, that probability was 31.9% in 2020 and 8.1% in the most recent ACS estimates.

Oacoma is ranked the 144th 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). Oacoma was ranked the 170th most populous place in the 2020 Census.

Oacoma's White Population

525 residents of Oacoma, or 95.8% of the population, identify as White. The share of White residents in Oacoma is significantly higher than in South Dakota overall, where 79.8% of the population is White. Oacoma ranks 354th statewide in terms of White residents as a share of the population, out of 485 places.

Since the 2020 Census, Oacoma's White population has grown by an estimated 66.7%. White residents' share of Oacoma's population has increased from 81.6% to 95.8%.

Oacoma is more White than neighboring Chamberlain (72.6% White), Pukwana (74% White), Reliance (75.8% White), Fort Thompson (4.3% White), and Ola (0% White).

Oacoma's Black Population

0 residents of Oacoma, or 0.0% of the population, identify as Black. The share of Black residents in Oacoma is slightly lower than in South Dakota overall, where 2.1% of the population is Black. Oacoma ranks 137th statewide in terms of Black residents as a share of the population, out of 485 places.

Since the 2020 Census, Oacoma's Black population has declined by an estimated 100.0%. Black residents' share of Oacoma's population has remained roughly unchanged at 0.0%.

Oacoma is less Black than neighboring Chamberlain (0.3% Black).

Oacoma's Asian Population

0 residents of Oacoma, or 0.0% of the population, identify as Asian. The share of Asian residents in Oacoma is comparable to the share in South Dakota overall, where 1.4% of the population is Asian. Oacoma ranks 176th statewide in terms of Asian residents as a share of the population, out of 485 places.

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

Oacoma's Hispanic Population

11 residents of Oacoma, or 2.0% of the population, identify as Hispanic. The share of Hispanic residents in Oacoma is slightly lower than in South Dakota overall, where 4.8% of the population is Hispanic. Oacoma ranks 342nd statewide in terms of Hispanic residents as a share of the population, out of 485 places.

Since the 2020 Census, Oacoma's Hispanic population has grown by an estimated 175.0%. Hispanic residents' share of Oacoma's population has increased from 1.0% to 2.0%.

Oacoma is more Hispanic than neighboring Pukwana (0% Hispanic), Reliance (0% Hispanic), Fort Thompson (0.6% Hispanic), and Ola (0% Hispanic). Oacoma is less Hispanic than neighboring Chamberlain (3.8% Hispanic).

Oacoma's Native American/Other Population

12 residents of Oacoma, or 2.2% of the population, identify as American Indian/Alaska Native/Native Hawaiian/Pacific Islander/Other. The share of Native American/Other residents in Oacoma is lower than in South Dakota overall, where 7.5% of the population is Native American/Other. Oacoma ranks 96th statewide in terms of Native American/Other residents as a share of the population, out of 485 places.

Since the 2020 Census, Oacoma's Native American/Other population has declined by an estimated 66.7%. Native American/Other residents' share of Oacoma's population has decreased from 9.3% to 2.2%.

Oacoma is more Native American/Other than neighboring Ola (0% Native American/Other). Oacoma is less Native American/Other than neighboring Chamberlain (14.2% Native American/Other), Pukwana (13.3% Native American/Other), Reliance (19% Native American/Other), and Fort Thompson (92.5% Native American/Other).

Oacoma's Multiracial Population

0 residents of Oacoma, or 0.0% of the population, identify as Multiracial. The share of Multiracial residents in Oacoma is slightly lower than in South Dakota overall, where 4.4% of the population is Multiracial. Oacoma ranks 44th statewide in terms of Multiracial residents as a share of the population, out of 485 places.

Since the 2020 Census, Oacoma's Multiracial population has declined by an estimated 100.0%. Multiracial residents' share of Oacoma's population has decreased from 7.8% to 0.0%.

Oacoma is less Multiracial than neighboring Chamberlain (9% Multiracial), Pukwana (12.7% Multiracial), Reliance (5.2% Multiracial), and Fort Thompson (2.6% 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.