Clark County Demographics
A map of Clark County's Population by Race
Clark County, South Dakota has an estimated population of 3,917, a slight increase from the 3,837 recorded in the 2020 Census. The population is 90.7% White, 5.3% Hispanic, 1.9% Multiracial, 0.8% Native American/Other, 0.7% Asian, and 0.5% Black. This demographic dot map shows the population of Clark County, with one dot drawn for each person counted by the Census, color-coded by race.
Clark 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 Clark County, that probability was 13.1% in 2020 and 17.3% in the most recent ACS estimates.
Clark County is ranked the 41st most populous county in South Dakota, out of 66 counties. Clark County was ranked the 42nd most populous county in the 2020 Census.
Clark County's White Population
3,554 residents of Clark County, or 90.7% of the population, identify as White. The share of White residents in Clark County is considerably higher than in South Dakota overall, where 79.8% of the population is White. Clark County ranks 15th statewide in terms of White residents as a share of the population, out of 66 counties.
Since the 2020 Census, Clark County's White population has remained roughly the same. White residents' share of Clark County's population has decreased from 93.1% to 90.7%.
Clark County is more White than neighboring Day County (83% White), and Codington County (90.4% White). Clark County is less White than neighboring Kingsbury County (91.3% White), Hamlin County (91.2% White), and Spink County (92.6% White).
Clark County's Black Population
21 residents of Clark County, or 0.5% of the population, identify as Black. The share of Black residents in Clark County is comparable to the share in South Dakota overall, where 2.1% of the population is Black. Clark County ranks 29th statewide in terms of Black residents as a share of the population, out of 66 counties.
Since the 2020 Census, Clark County's Black population has grown by an estimated 75.0%. Black residents' share of Clark County's population has remained roughly unchanged at 0.5%.
Clark County is more Black than neighboring Day County (0% Black), Kingsbury County (0% Black), and Hamlin County (0.1% Black). Clark County is less Black than neighboring Codington County (0.7% Black), and Spink County (1.6% Black).
Clark County's Asian Population
27 residents of Clark County, or 0.7% of the population, identify as Asian. The share of Asian residents in Clark County is comparable to the share in South Dakota overall, where 1.4% of the population is Asian. Clark County ranks 60th statewide in terms of Asian residents as a share of the population, out of 66 counties.
Since the 2020 Census, Clark County's Asian population has grown by an estimated 1250.0%. Asian residents' share of Clark County's population has increased from 0.1% to 0.7%.
Clark County is more Asian than neighboring Day County (0.1% Asian), Kingsbury County (0.4% Asian), Codington County (0.6% Asian), Hamlin County (0.3% Asian), and Spink County (0% Asian).
Clark County's Hispanic Population
209 residents of Clark County, or 5.3% of the population, identify as Hispanic. The share of Hispanic residents in Clark County is comparable to the share in South Dakota overall, where 4.8% of the population is Hispanic. Clark County ranks 13th statewide in terms of Hispanic residents as a share of the population, out of 66 counties.
Since the 2020 Census, Clark County's Hispanic population has grown by an estimated 23.7%. Hispanic residents' share of Clark County's population has increased from 4.4% to 5.3%.
Clark County is more Hispanic than neighboring Day County (2.8% Hispanic), Kingsbury County (2.9% Hispanic), Codington County (3.3% Hispanic), and Spink County (2.8% Hispanic). Clark County is less Hispanic than neighboring Hamlin County (5.9% Hispanic).
Clark County's Native American/Other Population
31 residents of Clark County, or 0.8% of the population, identify as American Indian/Alaska Native/Native Hawaiian/Pacific Islander/Other. The share of Native American/Other residents in Clark County is lower than in South Dakota overall, where 7.5% of the population is Native American/Other. Clark County ranks 65th statewide in terms of Native American/Other residents as a share of the population, out of 66 counties.
Since the 2020 Census, Clark County's Native American/Other population has grown by an estimated 40.9%. Native American/Other residents' share of Clark County's population has remained roughly unchanged at 0.8%.
Clark County is more Native American/Other than neighboring Hamlin County (0.3% Native American/Other), and Spink County (0.4% Native American/Other). Clark County is less Native American/Other than neighboring Day County (9.9% Native American/Other), Kingsbury County (1.3% Native American/Other), and Codington County (2.3% Native American/Other).
Clark County's Multiracial Population
75 residents of Clark County, or 1.9% of the population, identify as Multiracial. The share of Multiracial residents in Clark County is slightly lower than in South Dakota overall, where 4.4% of the population is Multiracial. Clark County ranks 65th statewide in terms of Multiracial residents as a share of the population, out of 66 counties.
Since the 2020 Census, Clark County's Multiracial population has grown by an estimated 27.1%. Multiracial residents' share of Clark County's population has remained roughly unchanged at 1.9%.
Clark County is less Multiracial than neighboring Day County (4.2% Multiracial), Kingsbury County (4.1% Multiracial), Codington County (2.8% Multiracial), Hamlin County (2.2% Multiracial), and Spink County (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.