Marion County Demographics

A map of Marion County's Population by Race

Marion County, Oregon had a population of 345,920 in 2020. It was 61.8% White, 1.1% Black, 2.1% Asian, 27.7% Hispanic, 2.5% Native American/Other, and 4.9% 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 5th most populous county of the 36 counties in Oregon.

Marion County's White Population

213,650 residents of Marion County identify as White, or 61.8%. This makes the White share of the population of Marion County slightly less than the White share of the population of Oregon (71.7% White). Of the 36 counties in Oregon, Marion County is ranked #32 in terms of White residents as a share of the population.

Marion County is less White than neighboring Linn County (81% White), Clackamas County (77.2% White), Multnomah County (65.7% White), Yamhill County (73.7% White), and Polk County (74% White).

Marion County's Black Population

3,787 residents of Marion County identify as Black, or 1.1%. This makes the Black share of the population of Marion County roughly similar to the Black share of the population of Oregon (1.9% Black). Of the 36 counties in Oregon, Marion County is ranked #5 in terms of Black residents as a share of the population.

Marion County is more Black than neighboring Linn County (0.5% Black), Clackamas County (1% Black), Yamhill County (0.8% Black), and Polk County (0.8% Black). Marion County is less Black than neighboring Multnomah County (5.4% Black).

Marion County's Asian Population

7,270 residents of Marion County identify as Asian, or 2.1%. This makes the Asian share of the population of Marion County roughly similar to the Asian share of the population of Oregon (4.5% Asian). Of the 36 counties in Oregon, Marion County is ranked #6 in terms of Asian residents as a share of the population.

Marion County is more Asian than neighboring Linn County (1.1% Asian), Yamhill County (1.4% Asian), and Polk County (1.9% Asian). Marion County is less Asian than neighboring Clackamas County (4.9% Asian), and Multnomah County (7.5% Asian).

Marion County's Hispanic Population

95,740 residents of Marion County identify as Hispanic, or 27.7%. This makes the Hispanic share of the population of Marion County larger than the Hispanic share of the population of Oregon (13.9% Hispanic). Of the 36 counties in Oregon, Marion County is ranked #5 in terms of Hispanic residents as a share of the population.

Marion County is more Hispanic than neighboring Linn County (9.8% Hispanic), Clackamas County (9.6% Hispanic), Multnomah County (12.7% Hispanic), Yamhill County (16.5% Hispanic), and Polk County (14.6% Hispanic).

Marion County's Native American/Other Population

8,494 residents of Marion County identify as American Indian/Alaska Native/Native Hawaiian/Pacific Islander/Other, or 2.5%. 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 Oregon (2% Native American/Other). Of the 36 counties in Oregon, Marion County is ranked #11 in terms of Native American/Other residents as a share of the population.

Marion County is more Native American/Other than neighboring Linn County (1.7% Native American/Other), Clackamas County (1.3% Native American/Other), Multnomah County (1.9% Native American/Other), and Yamhill County (2% Native American/Other). Marion County is less Native American/Other than neighboring Polk County (2.7% Native American/Other).

Marion County's Multiracial Population

16,979 residents of Marion County identify as Multiracial, or 4.9%. This makes the Multiracial share of the population of Marion County roughly similar to the Multiracial share of the population of Oregon (6.1% Multiracial). Of the 36 counties in Oregon, Marion County is ranked #28 in terms of Multiracial residents as a share of the population.

Marion County is less Multiracial than neighboring Linn County (5.9% Multiracial), Clackamas County (6% Multiracial), Multnomah County (6.8% Multiracial), Yamhill County (5.6% Multiracial), and Polk County (6% Multiracial).

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