Benton County Demographics

A map of Benton County's Population by Race

Benton County, Oregon has an estimated population of 96,303, a slight increase from the 95,184 recorded in the 2020 Census. The population is 76.2% White, 9.4% Hispanic, 6.6% Asian, 5.5% Multiracial, 1.2% Native American/Other, and 1.1% Black. This demographic dot map shows the population of Benton County, with one dot drawn for each person counted by the Census, color-coded by race.

Benton has become slightly less racially diverse since the 2020 Census. It is considerably less 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 Benton County, that probability was 40.8% in 2020 and 40.2% in the most recent ACS estimates.

Benton County is ranked the 11th most populous county in Oregon, out of 36 counties. Benton County was ranked the 11th most populous county in the 2020 Census.

Benton County's White Population

73,428 residents of Benton County, or 76.2% of the population, identify as White. The share of White residents in Benton County is slightly higher than in Oregon overall, where 71.4% of the population is White. Benton County ranks 24th statewide in terms of White residents as a share of the population, out of 36 counties.

Since the 2020 Census, Benton County's White population has grown by an estimated 1.7%. White residents' share of Benton County's population has remained roughly unchanged at 76.2%.

Benton County is more White than neighboring Polk County (73.9% White), and Yamhill County (72.7% White). Benton County is less White than neighboring Lincoln County (78.3% White), Lane County (78.2% White), and Linn County (81.3% White).

Benton County's Black Population

1,103 residents of Benton County, or 1.1% of the population, identify as Black. The share of Black residents in Benton County is comparable to the share in Oregon overall, where 1.8% of the population is Black. Benton County ranks 7th statewide in terms of Black residents as a share of the population, out of 36 counties.

Since the 2020 Census, Benton County's Black population has grown by an estimated 17.6%. Black residents' share of Benton County's population has remained roughly unchanged at 1.1%.

Benton County is more Black than neighboring Polk County (0.6% Black), Lincoln County (0.4% Black), Yamhill County (0.7% Black), and Linn County (0.4% Black).

Benton County's Asian Population

6,365 residents of Benton County, or 6.6% of the population, identify as Asian. The share of Asian residents in Benton County is slightly higher than in Oregon overall, where 4.4% of the population is Asian. Benton County ranks 3rd statewide in terms of Asian residents as a share of the population, out of 36 counties.

Since the 2020 Census, Benton County's Asian population has remained roughly the same. Asian residents' share of Benton County's population has remained roughly unchanged at 6.6%.

Benton County is more Asian than neighboring Polk County (1.9% Asian), Lincoln County (1.2% Asian), Yamhill County (1.9% Asian), Lane County (2.5% Asian), and Linn County (1% Asian).

Benton County's Hispanic Population

9,031 residents of Benton County, or 9.4% of the population, identify as Hispanic. The share of Hispanic residents in Benton County is lower than in Oregon overall, where 14.7% of the population is Hispanic. Benton County ranks 21st statewide in terms of Hispanic residents as a share of the population, out of 36 counties.

Since the 2020 Census, Benton County's Hispanic population has grown by an estimated 5.9%. Hispanic residents' share of Benton County's population has remained roughly unchanged at 9.4%.

Benton County is less Hispanic than neighboring Polk County (15.6% Hispanic), Lincoln County (10.3% Hispanic), Yamhill County (17.6% Hispanic), Lane County (10.5% Hispanic), and Linn County (10.7% Hispanic).

Benton County's Native American/Other Population

1,127 residents of Benton County, or 1.2% of the population, identify as American Indian/Alaska Native/Native Hawaiian/Pacific Islander/Other. The share of Native American/Other residents in Benton County is comparable to the share in Oregon overall, where 1.6% of the population is Native American/Other. Benton County ranks 29th statewide in terms of Native American/Other residents as a share of the population, out of 36 counties.

Since the 2020 Census, Benton County's Native American/Other population has declined by an estimated 16.0%. Native American/Other residents' share of Benton County's population has remained roughly unchanged at 1.2%.

Benton County is more Native American/Other than neighboring Linn County (1% Native American/Other). Benton County is less Native American/Other than neighboring Polk County (2.3% Native American/Other), Lincoln County (2.9% Native American/Other), Yamhill County (1.6% Native American/Other), and Lane County (1.3% Native American/Other).

Benton County's Multiracial Population

5,249 residents of Benton County, or 5.5% of the population, identify as Multiracial. The share of Multiracial residents in Benton County is comparable to the share in Oregon overall, where 6.1% of the population is Multiracial. Benton County ranks 13th statewide in terms of Multiracial residents as a share of the population, out of 36 counties.

Since the 2020 Census, Benton County's Multiracial population has declined by an estimated 9.4%. Multiracial residents' share of Benton County's population has decreased from 6.1% to 5.5%.

Benton County is more Multiracial than neighboring Yamhill County (5.4% Multiracial). Benton County is less Multiracial than neighboring Polk County (5.7% Multiracial), Lincoln County (7% Multiracial), Lane County (6.4% Multiracial), and Linn County (5.6% 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.