Marion County Demographics

A map of Marion County's Population by Race

Marion County, Indiana had a population of 977,203 in 2020. It was 50.5% White, 27.2% Black, 4.1% Asian, 13.2% Hispanic, 0.8% Native American/Other, and 4.2% 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 most populous county of the 92 counties in Indiana.

Marion County's White Population

493,665 residents of Marion County identify as White, or 50.5%. This makes the White share of the population of Marion County considerably less than the White share of the population of Indiana (75.5% White). Of the 92 counties in Indiana, Marion County is ranked #91 in terms of White residents as a share of the population.

Marion County is less White than neighboring Johnson County (84.5% White), Hamilton County (79.2% White), Hancock County (89.1% White), Hendricks County (79.7% White), and Boone County (86.3% White).

Marion County's Black Population

265,659 residents of Marion County identify as Black, or 27.2%. This makes the Black share of the population of Marion County larger than the Black share of the population of Indiana (9.4% Black). Of the 92 counties in Indiana, Marion County is ranked #1 in terms of Black residents as a share of the population.

Marion County is more Black than neighboring Johnson County (2.4% Black), Hamilton County (4.2% Black), Hancock County (2.9% Black), Hendricks County (7.6% Black), and Boone County (2% Black).

Marion County's Asian Population

39,827 residents of Marion County identify as Asian, or 4.1%. This makes the Asian share of the population of Marion County roughly similar to the Asian share of the population of Indiana (2.5% Asian). Of the 92 counties in Indiana, Marion County is ranked #7 in terms of Asian residents as a share of the population.

Marion County is more Asian than neighboring Hancock County (0.9% Asian), Hendricks County (3.2% Asian), and Boone County (3.4% Asian). Marion County is less Asian than neighboring Johnson County (4.6% Asian), and Hamilton County (6.8% Asian).

Marion County's Hispanic Population

129,286 residents of Marion County identify as Hispanic, or 13.2%. This makes the Hispanic share of the population of Marion County roughly similar to the Hispanic share of the population of Indiana (8.2% Hispanic). Of the 92 counties in Indiana, Marion County is ranked #6 in terms of Hispanic residents as a share of the population.

Marion County is more Hispanic than neighboring Johnson County (4% Hispanic), Hamilton County (5.2% Hispanic), Hancock County (2.8% Hispanic), Hendricks County (4.6% Hispanic), and Boone County (3.9% Hispanic).

Marion County's Native American/Other Population

7,499 residents of Marion County identify as American Indian/Alaska Native/Native Hawaiian/Pacific Islander/Other, or 0.8%. 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 Indiana (0.6% Native American/Other). Of the 92 counties in Indiana, Marion County is ranked #6 in terms of Native American/Other residents as a share of the population.

Marion County is more Native American/Other than neighboring Johnson County (0.6% Native American/Other), Hamilton County (0.6% Native American/Other), Hancock County (0.5% Native American/Other), Hendricks County (0.6% Native American/Other), and Boone County (0.5% Native American/Other).

Marion County's Multiracial Population

41,267 residents of Marion County identify as Multiracial, or 4.2%. This makes the Multiracial share of the population of Marion County roughly similar to the Multiracial share of the population of Indiana (3.9% Multiracial). Of the 92 counties in Indiana, Marion County is ranked #16 in terms of Multiracial residents as a share of the population.

Marion County is more Multiracial than neighboring Johnson County (3.9% Multiracial), Hamilton County (4% Multiracial), Hancock County (3.8% Multiracial), and Boone County (3.8% Multiracial).

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