Day County Demographics

A map of Day County's Population by Race

Day County, South Dakota had a population of 5,449 in 2020. It was 84.3% White, 0.1% Black, 0.3% Asian, 2.8% Hispanic, 9.9% Native American/Other, and 2.5% Multiracial. This map presents the population of Day County, with one dot drawn for each person counted in the 2020 Census, color-coded by race.

Day County is the 32nd most populous county of the 66 counties in South Dakota.

Day County's White Population

4,595 residents of Day County identify as White, or 84.3%. This makes the White share of the population of Day County roughly similar to the White share of the population of South Dakota (79.6% White). Of the 66 counties in South Dakota, Day County is ranked #44 in terms of White residents as a share of the population.

Day County is more White than neighboring Marshall County (83.6% White), and Roberts County (54.3% White). Day County is less White than neighboring Clark County (93.1% White), Codington County (91.2% White), and Sargent County (92.4% White).

Day County's Black Population

3 residents of Day County identify as Black, or 0.1%. This makes the Black share of the population of Day County roughly similar to the Black share of the population of South Dakota (2% Black). Of the 66 counties in South Dakota, Day County is ranked #59 in terms of Black residents as a share of the population.

Day County is less Black than neighboring Clark County (0.3% Black), Codington County (0.4% Black), Roberts County (0.3% Black), and Sargent County (1.2% Black).

Day County's Asian Population

19 residents of Day County identify as Asian, or 0.3%. This makes the Asian share of the population of Day County roughly similar to the Asian share of the population of South Dakota (1.5% Asian). Of the 66 counties in South Dakota, Day County is ranked #30 in terms of Asian residents as a share of the population.

Day County is more Asian than neighboring Clark County (0.1% Asian). Day County is less Asian than neighboring Codington County (0.7% Asian).

Day County's Hispanic Population

153 residents of Day County identify as Hispanic, or 2.8%. This makes the Hispanic share of the population of Day County roughly similar to the Hispanic share of the population of South Dakota (4.4% Hispanic). Of the 66 counties in South Dakota, Day County is ranked #26 in terms of Hispanic residents as a share of the population.

Day County is more Hispanic than neighboring Codington County (2.6% Hispanic), Roberts County (2.1% Hispanic), and Sargent County (2.4% Hispanic). Day County is less Hispanic than neighboring Marshall County (5.9% Hispanic), and Clark County (4.4% Hispanic).

Day County's Native American/Other Population

541 residents of Day County identify as American Indian/Alaska Native/Native Hawaiian/Pacific Islander/Other, or 9.9%. This makes the Native American/Other share of the population of Day County roughly similar to the Native American/Other share of the population of South Dakota (8.7% Native American/Other). Of the 66 counties in South Dakota, Day County is ranked #18 in terms of Native American/Other residents as a share of the population.

Day County is more Native American/Other than neighboring Marshall County (7.5% Native American/Other), Clark County (0.6% Native American/Other), Codington County (2.5% Native American/Other), and Sargent County (0.2% Native American/Other). Day County is less Native American/Other than neighboring Roberts County (38.4% Native American/Other).

Day County's Multiracial Population

138 residents of Day County identify as Multiracial, or 2.5%. This makes the Multiracial share of the population of Day County roughly similar to the Multiracial share of the population of South Dakota (3.9% Multiracial). Of the 66 counties in South Dakota, Day County is ranked #43 in terms of Multiracial residents as a share of the population.

Day County is more Multiracial than neighboring Clark County (1.5% Multiracial). Day County is less Multiracial than neighboring Codington County (2.6% Multiracial), Roberts County (4.7% Multiracial), and Sargent County (3.4% Multiracial).

Source: 2020 Census State Redistricting Data and Census TIGER/Line Shapefiles.