Umatilla County Demographics

A map of Umatilla County's Population by Race

Race	2024 Pop	2020 Pop	2024 %	2020 %
White	49,135	49,753	61.5%	62.1%
Hispanic	23,747	22,622	29.7%	28.3%
Multiracial	3,833	3,367	4.8%	4.2%
Native American/Other	2,096	2,996	2.6%	3.7%
Black	582	652	0.7%	0.8%
Asian	547	685	0.7%	0.9%

Umatilla County, Oregon has an estimated population of 79,940, a less than 1% change from the 80,075 recorded in the 2020 Census. The population is 61.5% White, 29.7% Hispanic, 4.8% Multiracial, 2.6% Native American/Other, 0.7% Black, and 0.7% Asian. This demographic dot map shows the population of Umatilla County, with one dot drawn for each person counted by the Census, color-coded by race.

Umatilla 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 Umatilla County, that probability was 53.1% in 2020 and 53.1% in the most recent ACS estimates.

Umatilla County is ranked the 14th most populous county in Oregon, out of 36 counties. Umatilla County was ranked the 14th most populous county in the 2020 Census.

Umatilla County's White Population

49,135 residents of Umatilla County, or 61.5% of the population, identify as White. The share of White residents in Umatilla County is lower than in Oregon overall, where 71.4% of the population is White. Umatilla County ranks 31st statewide in terms of White residents as a share of the population, out of 36 counties.

Since the 2020 Census, Umatilla County's White population has declined by an estimated 1.2%. White residents' share of Umatilla County's population has decreased from 62.1% to 61.5%.

Umatilla County is more White than neighboring Morrow County (52.5% White), and Franklin County (37.1% White). Umatilla County is less White than neighboring Walla Walla County (67.7% White), Union County (85.8% White), and Benton County (64.6% White).

Umatilla County's Black Population

582 residents of Umatilla County, or 0.7% of the population, identify as Black. The share of Black residents in Umatilla County is comparable to the share in Oregon overall, where 1.8% of the population is Black. Umatilla County ranks 8th statewide in terms of Black residents as a share of the population, out of 36 counties.

Since the 2020 Census, Umatilla County's Black population has declined by an estimated 10.7%. Black residents' share of Umatilla County's population has remained roughly unchanged at 0.7%.

Umatilla County is less Black than neighboring Walla Walla County (1.6% Black), Union County (0.8% Black), Morrow County (0.8% Black), Franklin County (1.9% Black), and Benton County (1.6% Black).

Umatilla County's Asian Population

547 residents of Umatilla County, or 0.7% of the population, identify as Asian. The share of Asian residents in Umatilla County is slightly lower than in Oregon overall, where 4.4% of the population is Asian. Umatilla County ranks 24th statewide in terms of Asian residents as a share of the population, out of 36 counties.

Since the 2020 Census, Umatilla County's Asian population has declined by an estimated 20.1%. Asian residents' share of Umatilla County's population has remained roughly unchanged at 0.7%.

Umatilla County is more Asian than neighboring Morrow County (0.2% Asian). Umatilla County is less Asian than neighboring Walla Walla County (1.8% Asian), Union County (1.1% Asian), Franklin County (1.7% Asian), and Benton County (3% Asian).

Umatilla County's Hispanic Population

23,747 residents of Umatilla County, or 29.7% of the population, identify as Hispanic. The share of Hispanic residents in Umatilla County is considerably higher than in Oregon overall, where 14.7% of the population is Hispanic. Umatilla County ranks 4th statewide in terms of Hispanic residents as a share of the population, out of 36 counties.

Since the 2020 Census, Umatilla County's Hispanic population has grown by an estimated 5.0%. Hispanic residents' share of Umatilla County's population has increased from 28.3% to 29.7%.

Umatilla County is more Hispanic than neighboring Walla Walla County (23.8% Hispanic), Union County (5.5% Hispanic), and Benton County (25.6% Hispanic). Umatilla County is less Hispanic than neighboring Morrow County (42% Hispanic), and Franklin County (55.3% Hispanic).

Umatilla County's Native American/Other Population

2,096 residents of Umatilla County, or 2.6% of the population, identify as American Indian/Alaska Native/Native Hawaiian/Pacific Islander/Other. The share of Native American/Other residents in Umatilla County is comparable to the share in Oregon overall, where 1.6% of the population is Native American/Other. Umatilla County ranks 5th statewide in terms of Native American/Other residents as a share of the population, out of 36 counties.

Since the 2020 Census, Umatilla County's Native American/Other population has declined by an estimated 30.0%. Native American/Other residents' share of Umatilla County's population has decreased from 3.7% to 2.6%.

Umatilla County is more Native American/Other than neighboring Walla Walla County (1% Native American/Other), Morrow County (0.4% Native American/Other), Franklin County (0.9% Native American/Other), and Benton County (1.3% Native American/Other). Umatilla County is less Native American/Other than neighboring Union County (2.8% Native American/Other).

Umatilla County's Multiracial Population

3,833 residents of Umatilla County, or 4.8% of the population, identify as Multiracial. The share of Multiracial residents in Umatilla County is comparable to the share in Oregon overall, where 6.1% of the population is Multiracial. Umatilla County ranks 34th statewide in terms of Multiracial residents as a share of the population, out of 36 counties.

Since the 2020 Census, Umatilla County's Multiracial population has grown by an estimated 13.8%. Multiracial residents' share of Umatilla County's population has increased from 4.2% to 4.8%.

Umatilla County is more Multiracial than neighboring Walla Walla County (4.1% Multiracial), Union County (3.9% Multiracial), Morrow County (4% Multiracial), Franklin County (3.1% Multiracial), and Benton County (3.9% 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.