Oldham, SD Demographics

A map of Oldham's Population by Race

Race	2024 Pop	2020 Pop	2024 %	2020 %
White	68	100	90.7%	82.6%
Hispanic	5	7	6.7%	5.8%
Multiracial	2	10	2.7%	8.3%
Black	0	0	0.0%	0.0%
Asian	0	0	0.0%	0.0%
Native American/Other	0	4	0.0%	3.3%

Oldham, South Dakota has an estimated population of 75, a dramatic decrease from the 121 recorded in the 2020 Census. The population is 90.7% White, 6.7% Hispanic, 2.7% Multiracial, 0.0% Black, 0.0% Asian, and 0.0% Native American/Other. This demographic dot map shows the population of Oldham, with one dot drawn for each person counted by the Census, color-coded by race.

Oldham 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 Oldham, that probability was 30.6% in 2020 and 17.3% in the most recent ACS estimates.

Oldham is ranked the 339th 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). Oldham was ranked the 291st most populous place in the 2020 Census.

Oldham's White Population

68 residents of Oldham, or 90.7% of the population, identify as White. The share of White residents in Oldham is considerably higher than in South Dakota overall, where 79.8% of the population is White. Oldham ranks 345th statewide in terms of White residents as a share of the population, out of 485 places.

Since the 2020 Census, Oldham's White population has declined by an estimated 32.0%. White residents' share of Oldham's population has increased from 82.6% to 90.7%.

Oldham is more White than neighboring Ramona (33.1% White), Lake Preston (77.5% White), and Arlington (84.6% White). Oldham is less White than neighboring Spring Lake Colony (100% White), and Hetland (100% White).

Oldham's Black Population

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

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

Oldham's Asian Population

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

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

Oldham is less Asian than neighboring Lake Preston (0.3% Asian), and Arlington (2% Asian).

Oldham's Hispanic Population

5 residents of Oldham, or 6.7% of the population, identify as Hispanic. The share of Hispanic residents in Oldham is comparable to the share in South Dakota overall, where 4.8% of the population is Hispanic. Oldham ranks 79th statewide in terms of Hispanic residents as a share of the population, out of 485 places.

Since the 2020 Census, Oldham's Hispanic population has declined by an estimated 28.6%. Hispanic residents' share of Oldham's population has increased from 5.8% to 6.7%.

Oldham is more Hispanic than neighboring Spring Lake Colony (0% Hispanic), Lake Preston (5.5% Hispanic), and Hetland (0% Hispanic). Oldham is less Hispanic than neighboring Ramona (53% Hispanic), and Arlington (9.6% Hispanic).

Oldham's Native American/Other Population

0 residents of Oldham, 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 Oldham is lower than in South Dakota overall, where 7.5% of the population is Native American/Other. Oldham ranks 158th statewide in terms of Native American/Other residents as a share of the population, out of 485 places.

Since the 2020 Census, Oldham's Native American/Other population has declined by an estimated 100.0%. Native American/Other residents' share of Oldham's population has decreased from 3.3% to 0.0%.

Oldham is less Native American/Other than neighboring Ramona (13.4% Native American/Other), Lake Preston (4.4% Native American/Other), and Arlington (0.3% Native American/Other).

Oldham's Multiracial Population

2 residents of Oldham, or 2.7% of the population, identify as Multiracial. The share of Multiracial residents in Oldham is comparable to the share in South Dakota overall, where 4.4% of the population is Multiracial. Oldham ranks 39th statewide in terms of Multiracial residents as a share of the population, out of 485 places.

Since the 2020 Census, Oldham's Multiracial population has declined by an estimated 80.0%. Multiracial residents' share of Oldham's population has decreased from 8.3% to 2.7%.

Oldham is more Multiracial than neighboring Spring Lake Colony (0% Multiracial), Ramona (0.6% Multiracial), and Hetland (0% Multiracial). Oldham is less Multiracial than neighboring Lake Preston (12.2% Multiracial), and Arlington (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.