Bennett County Demographics

A map of Bennett County's Population by Race

Race	2024 Pop	2020 Pop	2024 %	2020 %
Native American/Other	1,874	2,062	56.0%	61.0%
White	1,149	997	34.3%	29.5%
Hispanic	169	87	5.1%	2.6%
Multiracial	98	221	2.9%	6.5%
Asian	49	7	1.5%	0.2%
Black	6	7	0.2%	0.2%

Bennett County, South Dakota has an estimated population of 3,345, a slight decrease from the 3,381 recorded in the 2020 Census. The population is 56.0% Native American/Other, 34.3% White, 5.1% Hispanic, 2.9% Multiracial, 1.5% Asian, and 0.2% Black. This demographic dot map shows the population of Bennett County, with one dot drawn for each person counted by the Census, color-coded by race.

Bennett has become more 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 Bennett County, that probability was 53.6% in 2020 and 56.5% in the most recent ACS estimates.

Bennett County is ranked the 45th most populous county in South Dakota, out of 66 counties. Bennett County was ranked the 45th most populous county in the 2020 Census.

Bennett County's White Population

1,149 residents of Bennett County, or 34.3% of the population, identify as White. The share of White residents in Bennett County is significantly lower than in South Dakota overall, where 79.8% of the population is White. Bennett County ranks 60th statewide in terms of White residents as a share of the population, out of 66 counties.

Since the 2020 Census, Bennett County's White population has grown by an estimated 15.2%. White residents' share of Bennett County's population has increased from 29.5% to 34.3%.

Bennett County is more White than neighboring Oglala Lakota County (7% White), and Todd County (8.1% White). Bennett County is less White than neighboring Jackson County (36.6% White), Cherry County (83.8% White), and Mellette County (34.7% White).

Bennett County's Black Population

6 residents of Bennett County, or 0.2% of the population, identify as Black. The share of Black residents in Bennett County is comparable to the share in South Dakota overall, where 2.1% of the population is Black. Bennett County ranks 38th statewide in terms of Black residents as a share of the population, out of 66 counties.

Since the 2020 Census, Bennett County's Black population has declined by an estimated 14.3%. Black residents' share of Bennett County's population has remained roughly unchanged at 0.2%.

Bennett County is more Black than neighboring Jackson County (0% Black), Oglala Lakota County (0.1% Black), and Mellette County (0% Black). Bennett County is less Black than neighboring Cherry County (1% Black), and Todd County (0.4% Black).

Bennett County's Asian Population

49 residents of Bennett County, or 1.5% of the population, identify as Asian. The share of Asian residents in Bennett County is comparable to the share in South Dakota overall, where 1.4% of the population is Asian. Bennett County ranks 44th statewide in terms of Asian residents as a share of the population, out of 66 counties.

Since the 2020 Census, Bennett County's Asian population has grown by an estimated 600.0%. Asian residents' share of Bennett County's population has increased from 0.2% to 1.5%.

Bennett County is more Asian than neighboring Jackson County (0% Asian), Oglala Lakota County (0% Asian), and Mellette County (0% Asian). Bennett County is less Asian than neighboring Cherry County (1.7% Asian), and Todd County (3.1% Asian).

Bennett County's Hispanic Population

169 residents of Bennett County, or 5.1% of the population, identify as Hispanic. The share of Hispanic residents in Bennett County is comparable to the share in South Dakota overall, where 4.8% of the population is Hispanic. Bennett County ranks 32nd statewide in terms of Hispanic residents as a share of the population, out of 66 counties.

Since the 2020 Census, Bennett County's Hispanic population has grown by an estimated 94.3%. Hispanic residents' share of Bennett County's population has increased from 2.6% to 5.1%.

Bennett County is more Hispanic than neighboring Jackson County (0.4% Hispanic), Cherry County (3.5% Hispanic), Oglala Lakota County (1.9% Hispanic), Todd County (2.4% Hispanic), and Mellette County (0.9% Hispanic).

Bennett County's Native American/Other Population

1,874 residents of Bennett County, or 56.0% of the population, identify as American Indian/Alaska Native/Native Hawaiian/Pacific Islander/Other. The share of Native American/Other residents in Bennett County is significantly higher than in South Dakota overall, where 7.5% of the population is Native American/Other. Bennett County ranks 7th statewide in terms of Native American/Other residents as a share of the population, out of 66 counties.

Since the 2020 Census, Bennett County's Native American/Other population has declined by an estimated 9.1%. Native American/Other residents' share of Bennett County's population has decreased from 61.0% to 56.0%.

Bennett County is more Native American/Other than neighboring Cherry County (6% Native American/Other). Bennett County is less Native American/Other than neighboring Jackson County (61.2% Native American/Other), Oglala Lakota County (90.8% Native American/Other), Todd County (81.9% Native American/Other), and Mellette County (56.9% Native American/Other).

Bennett County's Multiracial Population

98 residents of Bennett County, or 2.9% of the population, identify as Multiracial. The share of Multiracial residents in Bennett County is comparable to the share in South Dakota overall, where 4.4% of the population is Multiracial. Bennett County ranks 2nd statewide in terms of Multiracial residents as a share of the population, out of 66 counties.

Since the 2020 Census, Bennett County's Multiracial population has declined by an estimated 55.7%. Multiracial residents' share of Bennett County's population has decreased from 6.5% to 2.9%.

Bennett County is more Multiracial than neighboring Jackson County (1.7% Multiracial), and Oglala Lakota County (0.2% Multiracial). Bennett County is less Multiracial than neighboring Cherry County (3.9% Multiracial), Todd County (4.1% Multiracial), and Mellette County (7.5% 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.