Interior, SD Demographics

A map of Interior's Population by Race

Race	2024 Pop	2020 Pop	2024 %	2020 %
Native American/Other	46	20	59.7%	30.8%
White	31	34	40.3%	52.3%
Black	0	0	0.0%	0.0%
Asian	0	0	0.0%	0.0%
Hispanic	0	2	0.0%	3.1%
Multiracial	0	9	0.0%	13.8%

Interior, South Dakota has an estimated population of 77, a large increase from the 65 recorded in the 2020 Census. The population is 59.7% Native American/Other, 40.3% White, 0.0% Black, 0.0% Asian, 0.0% Hispanic, and 0.0% Multiracial. This demographic dot map shows the population of Interior, with one dot drawn for each person counted by the Census, color-coded by race.

Interior has become considerably less racially diverse since the 2020 Census. It is considerably more 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 Interior, that probability was 61.2% in 2020 and 48.1% in the most recent ACS estimates.

Interior is ranked the 332nd 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). Interior was ranked the 371st most populous place in the 2020 Census.

Interior's White Population

31 residents of Interior, or 40.3% of the population, identify as White. The share of White residents in Interior is significantly lower than in South Dakota overall, where 79.8% of the population is White. Interior ranks 415th statewide in terms of White residents as a share of the population, out of 485 places.

Since the 2020 Census, Interior's White population has declined by an estimated 8.8%. White residents' share of Interior's population has decreased from 52.3% to 40.3%.

Interior is more White than neighboring Wanblee (1.5% White), and Kyle (4.9% White). Interior is less White than neighboring Cottonwood (100% White), Quinn (79.2% White), and Wall (66.9% White).

Interior's Black Population

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

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

Interior is less Black than neighboring Kyle (1.3% Black), and Wall (2.6% Black).

Interior's Asian Population

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

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

Interior is less Asian than neighboring Wall (1.8% Asian).

Interior's Hispanic Population

0 residents of Interior, or 0.0% of the population, identify as Hispanic. The share of Hispanic residents in Interior is slightly lower than in South Dakota overall, where 4.8% of the population is Hispanic. Interior ranks 177th statewide in terms of Hispanic residents as a share of the population, out of 485 places.

Since the 2020 Census, Interior's Hispanic population has declined by an estimated 100.0%. Hispanic residents' share of Interior's population has decreased from 3.1% to 0.0%.

Interior is less Hispanic than neighboring Quinn (20.8% Hispanic), Kyle (1.3% Hispanic), and Wall (17.4% Hispanic).

Interior's Native American/Other Population

46 residents of Interior, or 59.7% of the population, identify as American Indian/Alaska Native/Native Hawaiian/Pacific Islander/Other. The share of Native American/Other residents in Interior is significantly higher than in South Dakota overall, where 7.5% of the population is Native American/Other. Interior ranks 60th statewide in terms of Native American/Other residents as a share of the population, out of 485 places.

Since the 2020 Census, Interior's Native American/Other population has grown by an estimated 130.0%. Native American/Other residents' share of Interior's population has increased from 30.8% to 59.7%.

Interior is more Native American/Other than neighboring Cottonwood (0% Native American/Other), Quinn (0% Native American/Other), and Wall (1.9% Native American/Other). Interior is less Native American/Other than neighboring Wanblee (98.5% Native American/Other), and Kyle (92.2% Native American/Other).

Interior's Multiracial Population

0 residents of Interior, or 0.0% of the population, identify as Multiracial. The share of Multiracial residents in Interior is slightly lower than in South Dakota overall, where 4.4% of the population is Multiracial. Interior ranks 13th statewide in terms of Multiracial residents as a share of the population, out of 485 places.

Since the 2020 Census, Interior's Multiracial population has declined by an estimated 100.0%. Multiracial residents' share of Interior's population has decreased from 13.8% to 0.0%.

Interior is less Multiracial than neighboring Kyle (0.1% Multiracial), and Wall (9.5% 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.