Knox County Demographics

A map of Knox County's Population by Race

Knox County, Missouri has an estimated population of 3,756, a less than 1% change from the 3,744 recorded in the 2020 Census. The population is 94.8% White, 2.3% Native American/Other, 1.8% Multiracial, 0.6% Black, 0.3% Hispanic, and 0.2% Asian. This demographic dot map shows the population of Knox County, with one dot drawn for each person counted by the Census, color-coded by race.

Knox has become more racially diverse since the 2020 Census. It is considerably less diverse than Missouri overall. Demographers use a diversity index to measure the probability that two randomly selected individuals belong to different racial or ethnic groups. In Knox County, that probability was 8.8% in 2020 and 10.0% in the most recent ACS estimates.

Knox County is ranked the 113th most populous county in Missouri, out of 115 counties. Knox County was ranked the 113th most populous county in the 2020 Census.

Knox County's White Population

3,561 residents of Knox County, or 94.8% of the population, identify as White. The share of White residents in Knox County is significantly higher than in Missouri overall, where 76.3% of the population is White. Knox County ranks 6th statewide in terms of White residents as a share of the population, out of 115 counties.

Since the 2020 Census, Knox County's White population has remained roughly the same. White residents' share of Knox County's population has decreased from 95.4% to 94.8%.

Knox County is more White than neighboring Shelby County (93.6% White), Lewis County (91.5% White), and Adair County (87.1% White). Knox County is less White than neighboring Scotland County (96% White), and Clark County (94.9% White).

Knox County's Black Population

24 residents of Knox County, or 0.6% of the population, identify as Black. The share of Black residents in Knox County is considerably lower than in Missouri overall, where 10.9% of the population is Black. Knox County ranks 76th statewide in terms of Black residents as a share of the population, out of 115 counties.

Since the 2020 Census, Knox County's Black population has grown by an estimated 20.0%. Black residents' share of Knox County's population has remained roughly unchanged at 0.6%.

Knox County is more Black than neighboring Scotland County (0.1% Black). Knox County is less Black than neighboring Shelby County (1.1% Black), Lewis County (3.9% Black), Adair County (4.4% Black), and Clark County (1.9% Black).

Knox County's Asian Population

7 residents of Knox County, or 0.2% of the population, identify as Asian. The share of Asian residents in Knox County is comparable to the share in Missouri overall, where 2.1% of the population is Asian. Knox County ranks 42nd statewide in terms of Asian residents as a share of the population, out of 115 counties.

Since the 2020 Census, Knox County's Asian population has declined by an estimated 61.1%. Asian residents' share of Knox County's population has remained roughly unchanged at 0.2%.

Knox County is more Asian than neighboring Scotland County (0% Asian), and Clark County (0.1% Asian). Knox County is less Asian than neighboring Shelby County (0.4% Asian), Lewis County (0.5% Asian), and Adair County (2.1% Asian).

Knox County's Hispanic Population

11 residents of Knox County, or 0.3% of the population, identify as Hispanic. The share of Hispanic residents in Knox County is slightly lower than in Missouri overall, where 5.2% of the population is Hispanic. Knox County ranks 115th statewide in terms of Hispanic residents as a share of the population, out of 115 counties.

Since the 2020 Census, Knox County's Hispanic population has declined by an estimated 52.2%. Hispanic residents' share of Knox County's population has remained roughly unchanged at 0.3%.

Knox County is more Hispanic than neighboring Scotland County (0.2% Hispanic). Knox County is less Hispanic than neighboring Shelby County (2.3% Hispanic), Lewis County (1.1% Hispanic), Adair County (3% Hispanic), and Clark County (1% Hispanic).

Knox County's Native American/Other Population

85 residents of Knox County, or 2.3% of the population, identify as American Indian/Alaska Native/Native Hawaiian/Pacific Islander/Other. The share of Native American/Other residents in Knox County is comparable to the share in Missouri overall, where 0.7% of the population is Native American/Other. Knox County ranks 107th statewide in terms of Native American/Other residents as a share of the population, out of 115 counties.

Since the 2020 Census, Knox County's Native American/Other population has grown by an estimated 672.7%. Native American/Other residents' share of Knox County's population has increased from 0.3% to 2.3%.

Knox County is more Native American/Other than neighboring Scotland County (0.6% Native American/Other), Shelby County (0.1% Native American/Other), Lewis County (0.1% Native American/Other), Adair County (0.3% Native American/Other), and Clark County (0% Native American/Other).

Knox County's Multiracial Population

68 residents of Knox County, or 1.8% of the population, identify as Multiracial. The share of Multiracial residents in Knox County is slightly lower than in Missouri overall, where 4.8% of the population is Multiracial. Knox County ranks 110th statewide in terms of Multiracial residents as a share of the population, out of 115 counties.

Since the 2020 Census, Knox County's Multiracial population has declined by an estimated 31.3%. Multiracial residents' share of Knox County's population has decreased from 2.6% to 1.8%.

Knox County is less Multiracial than neighboring Scotland County (3% Multiracial), Shelby County (2.5% Multiracial), Lewis County (2.9% Multiracial), Adair County (3.1% Multiracial), and Clark County (2.1% 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.