Grant County Demographics

A map of Grant County's Population by Race

Grant County, South Dakota has an estimated population of 7,563, a less than 1% change from the 7,556 recorded in the 2020 Census. The population is 89.3% White, 7.4% Hispanic, 1.9% Multiracial, 0.8% Asian, 0.4% Black, and 0.3% Native American/Other. This demographic dot map shows the population of Grant County, with one dot drawn for each person counted by the Census, color-coded by race.

Grant has become more 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 Grant County, that probability was 18.4% in 2020 and 19.7% in the most recent ACS estimates.

Grant County is ranked the 23rd most populous county in South Dakota, out of 66 counties. Grant County was ranked the 23rd most populous county in the 2020 Census.

Grant County's White Population

6,751 residents of Grant County, or 89.3% of the population, identify as White. The share of White residents in Grant County is higher than in South Dakota overall, where 79.8% of the population is White. Grant County ranks 26th statewide in terms of White residents as a share of the population, out of 66 counties.

Since the 2020 Census, Grant County's White population has remained roughly the same. White residents' share of Grant County's population has decreased from 90.1% to 89.3%.

Grant County is more White than neighboring Roberts County (56.5% White). Grant County is less White than neighboring Deuel County (93.9% White), Big Stone County (93.6% White), Codington County (90.4% White), and Lac qui Parle County (92.6% White).

Grant County's Black Population

28 residents of Grant County, or 0.4% of the population, identify as Black. The share of Black residents in Grant County is comparable to the share in South Dakota overall, where 2.1% of the population is Black. Grant County ranks 61st statewide in terms of Black residents as a share of the population, out of 66 counties.

Since the 2020 Census, Grant County's Black population has grown from 0 to an estimated 28. Black residents' share of Grant County's population has remained roughly unchanged at 0.4%.

Grant County is more Black than neighboring Big Stone County (0.3% Black), Roberts County (0.3% Black), and Lac qui Parle County (0.3% Black). Grant County is less Black than neighboring Deuel County (0.5% Black), and Codington County (0.7% Black).

Grant County's Asian Population

59 residents of Grant County, or 0.8% of the population, identify as Asian. The share of Asian residents in Grant County is comparable to the share in South Dakota overall, where 1.4% of the population is Asian. Grant County ranks 42nd statewide in terms of Asian residents as a share of the population, out of 66 counties.

Since the 2020 Census, Grant County's Asian population has grown by an estimated 268.8%. Asian residents' share of Grant County's population has increased from 0.2% to 0.8%.

Grant County is more Asian than neighboring Deuel County (0.1% Asian), Big Stone County (0.7% Asian), Codington County (0.6% Asian), and Lac qui Parle County (0.6% Asian).

Grant County's Hispanic Population

559 residents of Grant County, or 7.4% of the population, identify as Hispanic. The share of Hispanic residents in Grant County is slightly higher than in South Dakota overall, where 4.8% of the population is Hispanic. Grant County ranks 3rd statewide in terms of Hispanic residents as a share of the population, out of 66 counties.

Since the 2020 Census, Grant County's Hispanic population has grown by an estimated 16.5%. Hispanic residents' share of Grant County's population has increased from 6.4% to 7.4%.

Grant County is more Hispanic than neighboring Deuel County (3.1% Hispanic), Big Stone County (2.7% Hispanic), Codington County (3.3% Hispanic), Roberts County (2.6% Hispanic), and Lac qui Parle County (3.4% Hispanic).

Grant County's Native American/Other Population

21 residents of Grant County, or 0.3% of the population, identify as American Indian/Alaska Native/Native Hawaiian/Pacific Islander/Other. The share of Native American/Other residents in Grant County is lower than in South Dakota overall, where 7.5% of the population is Native American/Other. Grant County ranks 50th statewide in terms of Native American/Other residents as a share of the population, out of 66 counties.

Since the 2020 Census, Grant County's Native American/Other population has declined by an estimated 74.4%. Native American/Other residents' share of Grant County's population has decreased from 1.1% to 0.3%.

Grant County is more Native American/Other than neighboring Deuel County (0% Native American/Other), and Lac qui Parle County (0.2% Native American/Other). Grant County is less Native American/Other than neighboring Big Stone County (0.5% Native American/Other), Codington County (2.3% Native American/Other), and Roberts County (34.6% Native American/Other).

Grant County's Multiracial Population

145 residents of Grant County, or 1.9% of the population, identify as Multiracial. The share of Multiracial residents in Grant County is slightly lower than in South Dakota overall, where 4.4% of the population is Multiracial. Grant County ranks 50th statewide in terms of Multiracial residents as a share of the population, out of 66 counties.

Since the 2020 Census, Grant County's Multiracial population has declined by an estimated 15.7%. Multiracial residents' share of Grant County's population has remained roughly unchanged at 1.9%.

Grant County is less Multiracial than neighboring Deuel County (2.4% Multiracial), Big Stone County (2.2% Multiracial), Codington County (2.8% Multiracial), Roberts County (5.2% Multiracial), and Lac qui Parle County (2.7% 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.