Idaho County Demographics
A map of Idaho County's Population by Race
Idaho County, Idaho has an estimated population of 17,432, an increase from the 16,541 recorded in the 2020 Census. The population is 89.1% White, 4.0% Hispanic, 3.8% Multiracial, 2.4% Native American/Other, 0.5% Asian, and 0.1% Black. This demographic dot map shows the population of Idaho County, with one dot drawn for each person counted by the Census, color-coded by race.
Idaho has become slightly 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 Idaho County, that probability was 21.1% in 2020 and 20.2% in the most recent ACS estimates.
Idaho County is ranked the 20th most populous county in Idaho, out of 44 counties. Idaho County was ranked the 20th most populous county in the 2020 Census.
Idaho County's White Population
15,540 residents of Idaho County, or 89.1% of the population, identify as White. The share of White residents in Idaho County is considerably higher than in Idaho overall, where 78.6% of the population is White. Idaho County ranks 14th statewide in terms of White residents as a share of the population, out of 44 counties.
Since the 2020 Census, Idaho County's White population has grown by an estimated 6.0%. White residents' share of Idaho County's population has increased from 88.6% to 89.1%.
Idaho County is more White than neighboring Clearwater County (87.6% White), Lewis County (81.7% White), Ravalli County (88.6% White), and Nez Perce County (85.5% White). Idaho County is less White than neighboring Valley County (90.1% White).
Idaho County's Black Population
22 residents of Idaho County, or 0.1% of the population, identify as Black. The share of Black residents in Idaho County is comparable to the share in Idaho overall, where 0.7% of the population is Black. Idaho County ranks 12th statewide in terms of Black residents as a share of the population, out of 44 counties.
Since the 2020 Census, Idaho County's Black population has declined by an estimated 59.3%. Black residents' share of Idaho County's population has remained roughly unchanged at 0.1%.
Idaho County is more Black than neighboring Valley County (0% Black). Idaho County is less Black than neighboring Clearwater County (0.2% Black), Lewis County (1.1% Black), Ravalli County (0.3% Black), and Nez Perce County (0.2% Black).
Idaho County's Asian Population
95 residents of Idaho County, or 0.5% of the population, identify as Asian. The share of Asian residents in Idaho County is comparable to the share in Idaho overall, where 1.3% of the population is Asian. Idaho County ranks 29th statewide in terms of Asian residents as a share of the population, out of 44 counties.
Since the 2020 Census, Idaho County's Asian population has grown by an estimated 72.7%. Asian residents' share of Idaho County's population has remained roughly unchanged at 0.5%.
Idaho County is more Asian than neighboring Valley County (0.2% Asian). Idaho County is less Asian than neighboring Clearwater County (1% Asian), Lewis County (1% Asian), Ravalli County (0.7% Asian), and Nez Perce County (0.9% Asian).
Idaho County's Hispanic Population
689 residents of Idaho County, or 4.0% of the population, identify as Hispanic. The share of Hispanic residents in Idaho County is lower than in Idaho overall, where 13.6% of the population is Hispanic. Idaho County ranks 37th statewide in terms of Hispanic residents as a share of the population, out of 44 counties.
Since the 2020 Census, Idaho County's Hispanic population has grown by an estimated 12.8%. Hispanic residents' share of Idaho County's population has remained roughly unchanged at 4.0%.
Idaho County is less Hispanic than neighboring Clearwater County (4.6% Hispanic), Lewis County (4.3% Hispanic), Valley County (5.4% Hispanic), Ravalli County (4.1% Hispanic), and Nez Perce County (4.4% Hispanic).
Idaho County's Native American/Other Population
420 residents of Idaho County, or 2.4% of the population, identify as American Indian/Alaska Native/Native Hawaiian/Pacific Islander/Other. The share of Native American/Other residents in Idaho County is comparable to the share in Idaho overall, where 1.5% of the population is Native American/Other. Idaho County ranks 7th statewide in terms of Native American/Other residents as a share of the population, out of 44 counties.
Since the 2020 Census, Idaho County's Native American/Other population has declined by an estimated 18.1%. Native American/Other residents' share of Idaho County's population has decreased from 3.1% to 2.4%.
Idaho County is more Native American/Other than neighboring Clearwater County (2% Native American/Other), Lewis County (2.2% Native American/Other), Valley County (1.1% Native American/Other), and Ravalli County (1.5% Native American/Other). Idaho County is less Native American/Other than neighboring Nez Perce County (4.9% Native American/Other).
Idaho County's Multiracial Population
666 residents of Idaho County, or 3.8% of the population, identify as Multiracial. The share of Multiracial residents in Idaho County is comparable to the share in Idaho overall, where 4.2% of the population is Multiracial. Idaho County ranks 20th statewide in terms of Multiracial residents as a share of the population, out of 44 counties.
Since the 2020 Census, Idaho County's Multiracial population has grown by an estimated 2.1%. Multiracial residents' share of Idaho County's population has remained roughly unchanged at 3.8%.
Idaho County is more Multiracial than neighboring Valley County (3.1% Multiracial). Idaho County is less Multiracial than neighboring Clearwater County (4.6% Multiracial), Lewis County (9.7% Multiracial), Ravalli County (4.8% Multiracial), and Nez Perce County (4.2% 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.