Marion County Demographics

A map of Marion County's Population by Race

Marion County, Missouri had a population of 28,525 in 2020. It was 87.4% White, 4.8% Black, 0.6% Asian, 1.8% Hispanic, 0.6% Native American/Other, and 4.8% Multiracial. This map presents the population of Marion County, with one dot drawn for each person counted in the 2020 Census, color-coded by race.

Marion County is the 39th most populous county of the 115 counties in Missouri.

Marion County's White Population

24,930 residents of Marion County identify as White, or 87.4%. This makes the White share of the population of Marion County slightly larger than the White share of the population of Missouri (75.8% White). Of the 115 counties in Missouri, Marion County is ranked #79 in terms of White residents as a share of the population.

Marion County is less White than neighboring Ralls County (93.8% White), Lewis County (92.9% White), Shelby County (94.2% White), Adams County (88.8% White), and Monroe County (91.2% White).

Marion County's Black Population

1,363 residents of Marion County identify as Black, or 4.8%. This makes the Black share of the population of Marion County slightly less than the Black share of the population of Missouri (11.3% Black). Of the 115 counties in Missouri, Marion County is ranked #26 in terms of Black residents as a share of the population.

Marion County is more Black than neighboring Ralls County (1.1% Black), Lewis County (1.8% Black), Shelby County (0.3% Black), Adams County (3.7% Black), and Monroe County (2% Black).

Marion County's Asian Population

165 residents of Marion County identify as Asian, or 0.6%. This makes the Asian share of the population of Marion County roughly similar to the Asian share of the population of Missouri (2.1% Asian). Of the 115 counties in Missouri, Marion County is ranked #31 in terms of Asian residents as a share of the population.

Marion County is more Asian than neighboring Ralls County (0.2% Asian), Lewis County (0.2% Asian), Shelby County (0% Asian), and Monroe County (0.4% Asian). Marion County is less Asian than neighboring Adams County (0.8% Asian).

Marion County's Hispanic Population

516 residents of Marion County identify as Hispanic, or 1.8%. This makes the Hispanic share of the population of Marion County roughly similar to the Hispanic share of the population of Missouri (4.9% Hispanic). Of the 115 counties in Missouri, Marion County is ranked #83 in terms of Hispanic residents as a share of the population.

Marion County is more Hispanic than neighboring Ralls County (0.9% Hispanic), and Lewis County (1.6% Hispanic). Marion County is less Hispanic than neighboring Shelby County (1.9% Hispanic), and Adams County (2% Hispanic).

Marion County's Native American/Other Population

179 residents of Marion County identify as American Indian/Alaska Native/Native Hawaiian/Pacific Islander/Other, or 0.6%. This makes the Native American/Other share of the population of Marion 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, Marion County is ranked #66 in terms of Native American/Other residents as a share of the population.

Marion County is more Native American/Other than neighboring Lewis County (0.4% Native American/Other), Shelby County (0.5% Native American/Other), and Adams County (0.5% Native American/Other). Marion County is less Native American/Other than neighboring Ralls County (0.7% Native American/Other).

Marion County's Multiracial Population

1,372 residents of Marion County identify as Multiracial, or 4.8%. This makes the Multiracial share of the population of Marion County roughly similar to the Multiracial share of the population of Missouri (5% Multiracial). Of the 115 counties in Missouri, Marion County is ranked #48 in terms of Multiracial residents as a share of the population.

Marion County is more Multiracial than neighboring Ralls County (3.3% Multiracial), Lewis County (3% Multiracial), Shelby County (3.1% Multiracial), Adams County (4.2% Multiracial), and Monroe County (4% Multiracial).

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