Elmore County Demographics

A map of Elmore County's Population by Race

Race	2024 Pop	2020 Pop	2024 %	2020 %
White	20,370	19,996	69.5%	69.8%
Hispanic	5,334	5,097	18.2%	17.8%
Multiracial	1,534	1,639	5.2%	5.7%
Black	827	688	2.8%	2.4%
Asian	776	766	2.6%	2.7%
Native American/Other	480	480	1.6%	1.7%

Elmore County, Idaho has an estimated population of 29,321, a slight increase from the 28,666 recorded in the 2020 Census. The population is 69.5% White, 18.2% Hispanic, 5.2% Multiracial, 2.8% Black, 2.6% Asian, and 1.6% Native American/Other. This demographic dot map shows the population of Elmore County, with one dot drawn for each person counted by the Census, color-coded by race.

Elmore is about as racially diverse as it was in the 2020 Census. It is considerably more 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 Elmore County, that probability was 47.7% in 2020 and 48.0% in the most recent ACS estimates.

Elmore County is ranked the 13th most populous county in Idaho, out of 44 counties. Elmore County was ranked the 13th most populous county in the 2020 Census.

Elmore County's White Population

20,370 residents of Elmore County, or 69.5% of the population, identify as White. The share of White residents in Elmore County is lower than in Idaho overall, where 78.6% of the population is White. Elmore County ranks 35th statewide in terms of White residents as a share of the population, out of 44 counties.

Since the 2020 Census, Elmore County's White population has grown by an estimated 1.9%. White residents' share of Elmore County's population has remained roughly unchanged at 69.5%.

Elmore County is more White than neighboring Gooding County (63.1% White), and Owyhee County (67.8% White). Elmore County is less White than neighboring Camas County (75.9% White), Boise County (83.5% White), and Ada County (80.9% White).

Elmore County's Black Population

827 residents of Elmore County, or 2.8% of the population, identify as Black. The share of Black residents in Elmore County is slightly higher than in Idaho overall, where 0.7% of the population is Black. Elmore County ranks 1st statewide in terms of Black residents as a share of the population, out of 44 counties.

Since the 2020 Census, Elmore County's Black population has grown by an estimated 20.2%. Black residents' share of Elmore County's population has remained roughly unchanged at 2.8%.

Elmore County is more Black than neighboring Camas County (0% Black), Boise County (0.2% Black), Gooding County (0.1% Black), Ada County (1.3% Black), and Owyhee County (0.5% Black).

Elmore County's Asian Population

776 residents of Elmore County, or 2.6% of the population, identify as Asian. The share of Asian residents in Elmore County is comparable to the share in Idaho overall, where 1.3% of the population is Asian. Elmore County ranks 2nd statewide in terms of Asian residents as a share of the population, out of 44 counties.

Since the 2020 Census, Elmore County's Asian population has grown by an estimated 1.3%. Asian residents' share of Elmore County's population has remained roughly unchanged at 2.6%.

Elmore County is more Asian than neighboring Camas County (0% Asian), Boise County (1.5% Asian), Gooding County (0.3% Asian), and Owyhee County (0.1% Asian). Elmore County is less Asian than neighboring Ada County (2.7% Asian).

Elmore County's Hispanic Population

5,334 residents of Elmore County, or 18.2% of the population, identify as Hispanic. The share of Hispanic residents in Elmore County is slightly higher than in Idaho overall, where 13.6% of the population is Hispanic. Elmore County ranks 11th statewide in terms of Hispanic residents as a share of the population, out of 44 counties.

Since the 2020 Census, Elmore County's Hispanic population has grown by an estimated 4.6%. Hispanic residents' share of Elmore County's population has remained roughly unchanged at 18.2%.

Elmore County is more Hispanic than neighboring Camas County (14% Hispanic), Boise County (5.1% Hispanic), and Ada County (9.8% Hispanic). Elmore County is less Hispanic than neighboring Gooding County (31.5% Hispanic), and Owyhee County (24.8% Hispanic).

Elmore County's Native American/Other Population

480 residents of Elmore 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 Elmore County is comparable to the share in Idaho overall, where 1.5% of the population is Native American/Other. Elmore County ranks 13th statewide in terms of Native American/Other residents as a share of the population, out of 44 counties.

Since the 2020 Census, Elmore County's Native American/Other population has remained roughly the same. Native American/Other residents' share of Elmore County's population has remained roughly unchanged at 1.6%.

Elmore County is more Native American/Other than neighboring Gooding County (1.1% Native American/Other), and Ada County (1% Native American/Other). Elmore County is less Native American/Other than neighboring Camas County (4.4% Native American/Other), Boise County (3.2% Native American/Other), and Owyhee County (2.4% Native American/Other).

Elmore County's Multiracial Population

1,534 residents of Elmore County, or 5.2% of the population, identify as Multiracial. The share of Multiracial residents in Elmore County is comparable to the share in Idaho overall, where 4.2% of the population is Multiracial. Elmore County ranks 3rd statewide in terms of Multiracial residents as a share of the population, out of 44 counties.

Since the 2020 Census, Elmore County's Multiracial population has declined by an estimated 6.4%. Multiracial residents' share of Elmore County's population has decreased from 5.7% to 5.2%.

Elmore County is more Multiracial than neighboring Gooding County (4% Multiracial), Ada County (4.3% Multiracial), and Owyhee County (4.3% Multiracial). Elmore County is less Multiracial than neighboring Camas County (5.7% Multiracial), and Boise County (6.5% 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.