Lewiston, ID Demographics

A map of Lewiston's Population by Race

Lewiston, Idaho has an estimated population of 34,651, a slight increase from the 34,203 recorded in the 2020 Census. The population is 88.5% White, 4.2% Hispanic, 4.2% Multiracial, 2.0% Native American/Other, 1.0% Asian, and 0.2% Black. This demographic dot map shows the population of Lewiston, with one dot drawn for each person counted by the Census, color-coded by race.

Lewiston has become less racially diverse since the 2020 Census. It is considerably less diverse than Idaho overall. Demographers use a diversity index to measure the probability that two randomly selected individuals belong to different racial or ethnic groups. In Lewiston, that probability was 23.0% in 2020 and 21.2% in the most recent ACS estimates.

Lewiston is ranked the 11th most populous place in Idaho, out of 236 places. This ranking is based on the Census definition of a place, which includes incorporated places like cities, towns, and villages, as well as unincorporated census-designated places (CDPs). Lewiston was ranked the 11th most populous place in the 2020 Census.

Lewiston's White Population

30,673 residents of Lewiston, or 88.5% of the population, identify as White. The share of White residents in Lewiston is higher than in Idaho overall, where 78.6% of the population is White. Lewiston ranks 97th statewide in terms of White residents as a share of the population, out of 236 places.

Since the 2020 Census, Lewiston's White population has grown by an estimated 2.5%. White residents' share of Lewiston's population has increased from 87.5% to 88.5%.

Lewiston is more White than neighboring Clarkston (81.9% White), West Clarkston-Highland (87.4% White), and Asotin (86.6% White). Lewiston is less White than neighboring Clarkston Heights-Vineland (90.8% White), and Genesee (89.6% White).

Lewiston's Black Population

55 residents of Lewiston, or 0.2% of the population, identify as Black. The share of Black residents in Lewiston is comparable to the share in Idaho overall, where 0.7% of the population is Black. Lewiston ranks 37th statewide in terms of Black residents as a share of the population, out of 236 places.

Since the 2020 Census, Lewiston's Black population has declined by an estimated 66.9%. Black residents' share of Lewiston's population has remained roughly unchanged at 0.2%.

Lewiston is more Black than neighboring Asotin (0% Black), and Clarkston Heights-Vineland (0% Black). Lewiston is less Black than neighboring Clarkston (2.3% Black), and West Clarkston-Highland (0.6% Black).

Lewiston's Asian Population

334 residents of Lewiston, or 1.0% of the population, identify as Asian. The share of Asian residents in Lewiston is comparable to the share in Idaho overall, where 1.3% of the population is Asian. Lewiston ranks 47th statewide in terms of Asian residents as a share of the population, out of 236 places.

Since the 2020 Census, Lewiston's Asian population has grown by an estimated 12.5%. Asian residents' share of Lewiston's population has remained roughly unchanged at 1.0%.

Lewiston is more Asian than neighboring West Clarkston-Highland (0.1% Asian), Asotin (0% Asian), Clarkston Heights-Vineland (0.1% Asian), and Genesee (0% Asian). Lewiston is less Asian than neighboring Clarkston (3.4% Asian).

Lewiston's Hispanic Population

1,452 residents of Lewiston, or 4.2% of the population, identify as Hispanic. The share of Hispanic residents in Lewiston is lower than in Idaho overall, where 13.6% of the population is Hispanic. Lewiston ranks 164th statewide in terms of Hispanic residents as a share of the population, out of 236 places.

Since the 2020 Census, Lewiston's Hispanic population has grown by an estimated 3.5%. Hispanic residents' share of Lewiston's population has remained roughly unchanged at 4.2%.

Lewiston is more Hispanic than neighboring Clarkston Heights-Vineland (4% Hispanic), and Genesee (2% Hispanic). Lewiston is less Hispanic than neighboring Clarkston (4.7% Hispanic), West Clarkston-Highland (4.8% Hispanic), and Asotin (7.5% Hispanic).

Lewiston's Native American/Other Population

679 residents of Lewiston, or 2.0% of the population, identify as American Indian/Alaska Native/Native Hawaiian/Pacific Islander/Other. The share of Native American/Other residents in Lewiston is comparable to the share in Idaho overall, where 1.5% of the population is Native American/Other. Lewiston ranks 46th statewide in terms of Native American/Other residents as a share of the population, out of 236 places.

Since the 2020 Census, Lewiston's Native American/Other population has declined by an estimated 5.6%. Native American/Other residents' share of Lewiston's population has remained roughly unchanged at 2.0%.

Lewiston is more Native American/Other than neighboring Clarkston (1.8% Native American/Other), Asotin (1.1% Native American/Other), Clarkston Heights-Vineland (0.8% Native American/Other), and Genesee (0.3% Native American/Other). Lewiston is less Native American/Other than neighboring West Clarkston-Highland (3.2% Native American/Other).

Lewiston's Multiracial Population

1,458 residents of Lewiston, or 4.2% of the population, identify as Multiracial. The share of Multiracial residents in Lewiston is comparable to the share in Idaho overall, where 4.2% of the population is Multiracial. Lewiston ranks 60th statewide in terms of Multiracial residents as a share of the population, out of 236 places.

Since the 2020 Census, Lewiston's Multiracial population has declined by an estimated 13.7%. Multiracial residents' share of Lewiston's population has decreased from 4.9% to 4.2%.

Lewiston is more Multiracial than neighboring West Clarkston-Highland (3.9% Multiracial). Lewiston is less Multiracial than neighboring Clarkston (5.9% Multiracial), Asotin (4.8% Multiracial), and Genesee (7.9% 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.