Multnomah County Demographics

A map of Multnomah County's Population by Race

Race	2024 Pop	2020 Pop	2024 %	2020 %
White	522,687	535,623	65.2%	65.7%
Hispanic	108,265	103,753	13.5%	12.7%
Asian	59,173	61,280	7.4%	7.5%
Multiracial	56,638	55,388	7.1%	6.8%
Black	42,192	43,793	5.3%	5.4%
Native American/Other	12,522	15,591	1.6%	1.9%

Multnomah County, Oregon has an estimated population of 801,477, a slight decrease from the 815,428 recorded in the 2020 Census. The population is 65.2% White, 13.5% Hispanic, 7.4% Asian, 7.1% Multiracial, 5.3% Black, and 1.6% Native American/Other. This demographic dot map shows the population of Multnomah County, with one dot drawn for each person counted by the Census, color-coded by race.

Multnomah is about as racially diverse as it was in the 2020 Census. It is considerably more diverse than Oregon overall. Demographers use a diversity index to measure the probability that two randomly selected individuals belong to different racial or ethnic groups. In Multnomah County, that probability was 53.9% in 2020 and 54.3% in the most recent ACS estimates.

Multnomah County is ranked the most populous county in Oregon, out of 36 counties. Multnomah County was ranked the 1st most populous county in the 2020 Census.

Multnomah County's White Population

522,687 residents of Multnomah County, or 65.2% of the population, identify as White. The share of White residents in Multnomah County is lower than in Oregon overall, where 71.4% of the population is White. Multnomah County ranks 29th statewide in terms of White residents as a share of the population, out of 36 counties.

Since the 2020 Census, Multnomah County's White population has declined by an estimated 2.4%. White residents' share of Multnomah County's population has decreased from 65.7% to 65.2%.

Multnomah County is more White than neighboring Marion County (60.7% White), and Washington County (60% White). Multnomah County is less White than neighboring Clark County (72.5% White), Clackamas County (76.5% White), and Skamania County (82.9% White).

Multnomah County's Black Population

42,192 residents of Multnomah County, or 5.3% of the population, identify as Black. The share of Black residents in Multnomah County is slightly higher than in Oregon overall, where 1.8% of the population is Black. Multnomah County ranks 1st statewide in terms of Black residents as a share of the population, out of 36 counties.

Since the 2020 Census, Multnomah County's Black population has declined by an estimated 3.7%. Black residents' share of Multnomah County's population has remained roughly unchanged at 5.3%.

Multnomah County is more Black than neighboring Clark County (2.1% Black), Clackamas County (1% Black), Marion County (1.2% Black), Washington County (2.2% Black), and Skamania County (0.8% Black).

Multnomah County's Asian Population

59,173 residents of Multnomah County, or 7.4% of the population, identify as Asian. The share of Asian residents in Multnomah County is slightly higher than in Oregon overall, where 4.4% of the population is Asian. Multnomah County ranks 2nd statewide in terms of Asian residents as a share of the population, out of 36 counties.

Since the 2020 Census, Multnomah County's Asian population has declined by an estimated 3.4%. Asian residents' share of Multnomah County's population has remained roughly unchanged at 7.4%.

Multnomah County is more Asian than neighboring Clark County (5% Asian), Clackamas County (5.1% Asian), Marion County (2% Asian), and Skamania County (1.2% Asian). Multnomah County is less Asian than neighboring Washington County (11.4% Asian).

Multnomah County's Hispanic Population

108,265 residents of Multnomah County, or 13.5% of the population, identify as Hispanic. The share of Hispanic residents in Multnomah County is comparable to the share in Oregon overall, where 14.7% of the population is Hispanic. Multnomah County ranks 12th statewide in terms of Hispanic residents as a share of the population, out of 36 counties.

Since the 2020 Census, Multnomah County's Hispanic population has grown by an estimated 4.3%. Hispanic residents' share of Multnomah County's population has increased from 12.7% to 13.5%.

Multnomah County is more Hispanic than neighboring Clark County (12.3% Hispanic), Clackamas County (10.1% Hispanic), and Skamania County (6.7% Hispanic). Multnomah County is less Hispanic than neighboring Marion County (29% Hispanic), and Washington County (18.6% Hispanic).

Multnomah County's Native American/Other Population

12,522 residents of Multnomah County, or 1.6% of the population, identify as American Indian/Alaska Native/Native Hawaiian/Pacific Islander/Other. The share of Native American/Other residents in Multnomah County is comparable to the share in Oregon overall, where 1.6% of the population is Native American/Other. Multnomah County ranks 16th statewide in terms of Native American/Other residents as a share of the population, out of 36 counties.

Since the 2020 Census, Multnomah County's Native American/Other population has declined by an estimated 19.7%. Native American/Other residents' share of Multnomah County's population has remained roughly unchanged at 1.6%.

Multnomah County is more Native American/Other than neighboring Clackamas County (1.2% Native American/Other), and Washington County (1.3% Native American/Other). Multnomah County is less Native American/Other than neighboring Clark County (1.7% Native American/Other), Marion County (2.1% Native American/Other), and Skamania County (2.2% Native American/Other).

Multnomah County's Multiracial Population

56,638 residents of Multnomah County, or 7.1% of the population, identify as Multiracial. The share of Multiracial residents in Multnomah County is comparable to the share in Oregon overall, where 6.1% of the population is Multiracial. Multnomah County ranks 3rd statewide in terms of Multiracial residents as a share of the population, out of 36 counties.

Since the 2020 Census, Multnomah County's Multiracial population has grown by an estimated 2.3%. Multiracial residents' share of Multnomah County's population has remained roughly unchanged at 7.1%.

Multnomah County is more Multiracial than neighboring Clark County (6.4% Multiracial), Clackamas County (6.1% Multiracial), Marion County (5.1% Multiracial), Washington County (6.5% Multiracial), and Skamania County (6.2% 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.