McCook County Demographics

A map of McCook County's Population by Race

Race	2024 Pop	2020 Pop	2024 %	2020 %
White	5,328	5,277	92.6%	92.9%
Hispanic	206	175	3.6%	3.1%
Multiracial	155	156	2.7%	2.7%
Native American/Other	46	61	0.8%	1.1%
Black	16	9	0.3%	0.2%
Asian	0	4	0.0%	0.1%

McCook County, South Dakota has an estimated population of 5,751, a slight increase from the 5,682 recorded in the 2020 Census. The population is 92.6% White, 3.6% Hispanic, 2.7% Multiracial, 0.8% Native American/Other, 0.3% Black, and 0.0% Asian. This demographic dot map shows the population of McCook County, with one dot drawn for each person counted by the Census, color-coded by race.

McCook is about as racially diverse as it was in 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 McCook County, that probability was 13.6% in 2020 and 14.0% in the most recent ACS estimates.

McCook County is ranked the 30th most populous county in South Dakota, out of 66 counties. McCook County was ranked the 30th most populous county in the 2020 Census.

McCook County's White Population

5,328 residents of McCook County, or 92.6% of the population, identify as White. The share of White residents in McCook County is considerably higher than in South Dakota overall, where 79.8% of the population is White. McCook County ranks 17th statewide in terms of White residents as a share of the population, out of 66 counties.

Since the 2020 Census, McCook County's White population has remained roughly the same. White residents' share of McCook County's population has remained roughly unchanged at 92.6%.

McCook County is more White than neighboring Hanson County (91.8% White), Lake County (88.8% White), and Hutchinson County (90.8% White). McCook County is less White than neighboring Miner County (96% White), and Turner County (93% White).

McCook County's Black Population

16 residents of McCook County, or 0.3% of the population, identify as Black. The share of Black residents in McCook County is comparable to the share in South Dakota overall, where 2.1% of the population is Black. McCook County ranks 44th statewide in terms of Black residents as a share of the population, out of 66 counties.

Since the 2020 Census, McCook County's Black population has grown by an estimated 77.8%. Black residents' share of McCook County's population has remained roughly unchanged at 0.3%.

McCook County is more Black than neighboring Hutchinson County (0.1% Black). McCook County is less Black than neighboring Lake County (0.7% Black), Miner County (0.7% Black), and Turner County (0.4% Black).

McCook County's Asian Population

0 residents of McCook County, or 0.0% of the population, identify as Asian. The share of Asian residents in McCook County is comparable to the share in South Dakota overall, where 1.4% of the population is Asian. McCook County ranks 59th statewide in terms of Asian residents as a share of the population, out of 66 counties.

Since the 2020 Census, McCook County's Asian population has declined by an estimated 100.0%. Asian residents' share of McCook County's population has remained roughly unchanged at 0.0%.

McCook County is less Asian than neighboring Lake County (0.7% Asian), Miner County (0.2% Asian), Turner County (0.3% Asian), and Hutchinson County (0.3% Asian).

McCook County's Hispanic Population

206 residents of McCook County, or 3.6% of the population, identify as Hispanic. The share of Hispanic residents in McCook County is comparable to the share in South Dakota overall, where 4.8% of the population is Hispanic. McCook County ranks 21st statewide in terms of Hispanic residents as a share of the population, out of 66 counties.

Since the 2020 Census, McCook County's Hispanic population has grown by an estimated 17.7%. Hispanic residents' share of McCook County's population has increased from 3.1% to 3.6%.

McCook County is more Hispanic than neighboring Hanson County (1.4% Hispanic), Miner County (1.3% Hispanic), Turner County (3.5% Hispanic), and Hutchinson County (2.7% Hispanic). McCook County is less Hispanic than neighboring Lake County (5.3% Hispanic).

McCook County's Native American/Other Population

46 residents of McCook 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 McCook County is lower than in South Dakota overall, where 7.5% of the population is Native American/Other. McCook County ranks 51st statewide in terms of Native American/Other residents as a share of the population, out of 66 counties.

Since the 2020 Census, McCook County's Native American/Other population has declined by an estimated 24.6%. Native American/Other residents' share of McCook County's population has remained roughly unchanged at 0.8%.

McCook County is more Native American/Other than neighboring Hanson County (0% Native American/Other), Miner County (0.7% Native American/Other), and Turner County (0.7% Native American/Other). McCook County is less Native American/Other than neighboring Lake County (2.9% Native American/Other), and Hutchinson County (0.9% Native American/Other).

McCook County's Multiracial Population

155 residents of McCook County, or 2.7% of the population, identify as Multiracial. The share of Multiracial residents in McCook County is comparable to the share in South Dakota overall, where 4.4% of the population is Multiracial. McCook County ranks 37th statewide in terms of Multiracial residents as a share of the population, out of 66 counties.

Since the 2020 Census, McCook County's Multiracial population has remained roughly the same. Multiracial residents' share of McCook County's population has remained roughly unchanged at 2.7%.

McCook County is more Multiracial than neighboring Lake County (1.5% Multiracial), Miner County (1.1% Multiracial), and Turner County (2% Multiracial). McCook County is less Multiracial than neighboring Hanson County (6.5% Multiracial), and Hutchinson County (5.1% 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.