Elmore County, Idaho Demographics 2026

Population Overview

Elmore County is located in Idaho with a total population of 29,321. It is the 13th most populous county out of 44 in Idaho. The county encompasses 4 Census-designated places.

Age Demographics

The median age in Elmore County is 33.1 years. This is 11% lower than the state median of 37.3 years.

Economy, Income & Housing

The median household income in Elmore County is $65,359. This is 16% lower than the state median of $77,800. It is also 19% lower than the national median of $80,734. The poverty rate stands at 10.5%. This is about the same as the state poverty rate of 10.6%. The unemployment rate is 6.0%. This is 62% higher than the state rate of 3.7%. The median home value is $316,500. Housing costs are 24% lower than the state median of $418,600. The home-value-to-income ratio is 4.8x. 65.6% of occupied housing units are owner-occupied. This homeownership rate is 9% lower than the state average of 72.1%.

Race & Ethnicity

The largest racial or ethnic group in Elmore County is White (non-Hispanic), making up 69.5% of the population. Hispanic or Latino residents account for 18.2%. The Black or African American population is significantly higher than the state average (2.8% vs 0.7%). The Asian population is significantly higher than the state average (2.6% vs 1.3%).

Education

22.4% of residents aged 25 and older hold a bachelor's degree or higher. This is 30% lower than the state rate of 31.8%. Nationally, 35.7% of adults hold at least a bachelor's degree. The high school graduation rate (or equivalent) is 87.9%.

Data Sources & Methodology

All figures for Elmore County come from the U.S. Census Bureau's American Community Survey (ACS) 2020–2024 5-Year Estimates, with comparisons drawn against Idaho and national averages from the same dataset. See our methodology page for how each metric is defined, or data.census.gov for official tables with margins of error.