Buchanan County Demographics

A map of Buchanan County's Population by Race

Buchanan County, Missouri had a population of 84,793 in 2020. It was 80.7% White, 5.1% Black, 1.2% Asian, 6.6% Hispanic, 1.2% Native American/Other, and 5.3% Multiracial. This map presents the population of Buchanan County, with one dot drawn for each person counted in the 2020 Census, color-coded by race.

Buchanan County is the 14th most populous county of the 115 counties in Missouri.

Buchanan County's White Population

68,391 residents of Buchanan County identify as White, or 80.7%. This makes the White share of the population of Buchanan County roughly similar to the White share of the population of Missouri (75.8% White). Of the 115 counties in Missouri, Buchanan County is ranked #98 in terms of White residents as a share of the population.

Buchanan County is more White than neighboring Platte County (76.3% White). Buchanan County is less White than neighboring Andrew County (92.4% White), Doniphan County (88.1% White), Clinton County (90.9% White), and DeKalb County (87.5% White).

Buchanan County's Black Population

4,303 residents of Buchanan County identify as Black, or 5.1%. This makes the Black share of the population of Buchanan County slightly less than the Black share of the population of Missouri (11.3% Black). Of the 115 counties in Missouri, Buchanan County is ranked #23 in terms of Black residents as a share of the population.

Buchanan County is more Black than neighboring Andrew County (0.8% Black), Doniphan County (3.5% Black), and Clinton County (1% Black). Buchanan County is less Black than neighboring Platte County (7.6% Black), and DeKalb County (6.1% Black).

Buchanan County's Asian Population

1,048 residents of Buchanan County identify as Asian, or 1.2%. This makes the Asian share of the population of Buchanan County roughly similar to the Asian share of the population of Missouri (2.1% Asian). Of the 115 counties in Missouri, Buchanan County is ranked #19 in terms of Asian residents as a share of the population.

Buchanan County is more Asian than neighboring Andrew County (0.5% Asian), Doniphan County (0.4% Asian), Clinton County (0.4% Asian), and DeKalb County (0.4% Asian). Buchanan County is less Asian than neighboring Platte County (2.5% Asian).

Buchanan County's Hispanic Population

5,600 residents of Buchanan County identify as Hispanic, or 6.6%. This makes the Hispanic share of the population of Buchanan County roughly similar to the Hispanic share of the population of Missouri (4.9% Hispanic). Of the 115 counties in Missouri, Buchanan County is ranked #14 in terms of Hispanic residents as a share of the population.

Buchanan County is more Hispanic than neighboring Andrew County (2.2% Hispanic), Doniphan County (2.7% Hispanic), Clinton County (2.4% Hispanic), and DeKalb County (2.1% Hispanic). Buchanan County is less Hispanic than neighboring Platte County (6.7% Hispanic).

Buchanan County's Native American/Other Population

986 residents of Buchanan County identify as American Indian/Alaska Native/Native Hawaiian/Pacific Islander/Other, or 1.2%. This makes the Native American/Other share of the population of Buchanan County roughly similar to the Native American/Other share of the population of Missouri (0.9% Native American/Other). Of the 115 counties in Missouri, Buchanan County is ranked #13 in terms of Native American/Other residents as a share of the population.

Buchanan County is more Native American/Other than neighboring Andrew County (0.5% Native American/Other), Clinton County (0.6% Native American/Other), and DeKalb County (0.5% Native American/Other). Buchanan County is less Native American/Other than neighboring Platte County (1.4% Native American/Other), and Doniphan County (1.5% Native American/Other).

Buchanan County's Multiracial Population

4,465 residents of Buchanan County identify as Multiracial, or 5.3%. This makes the Multiracial share of the population of Buchanan County roughly similar to the Multiracial share of the population of Missouri (5% Multiracial). Of the 115 counties in Missouri, Buchanan County is ranked #27 in terms of Multiracial residents as a share of the population.

Buchanan County is more Multiracial than neighboring Andrew County (3.7% Multiracial), Doniphan County (3.7% Multiracial), Clinton County (4.7% Multiracial), and DeKalb County (3.4% Multiracial). Buchanan County is less Multiracial than neighboring Platte County (5.4% Multiracial).

Source: 2020 Census State Redistricting Data and Census TIGER/Line Shapefiles.