Lemhi County's estimated 2026 population is 8,540 with a growth rate of 0.78% in the past year according to the most recent United States census data. Lemhi County is the 33rd largest county in Idaho. The 2010 population was 7,952 and has seen a growth of 7.39% since that time.
Data after 2023 is projected based on recent change
Overall: 53.3 years
Female: 53.4 years
Male: 52.9 years
There are 6,850 adults, (2,550 of whom are seniors) in Lemhi County.
Female: 4,052 (49.1%)
Male: 4,197 (50.9%)
The racial composition of Lemhi County includes 92.42% White, and smaller percentages for other race, Native American, Asian, Native Hawaiian or Pacific Islander, Black or African American and multiracial populations.
Race | Population | Percentage (of total) |
|---|---|---|
| White | 7,624 | 92.42% |
| Two or more races | 470 | 5.7% |
| Other race | 90 | 1.09% |
| Native American | 34 | 0.41% |
| Asian | 13 | 0.16% |
| Native Hawaiian or Pacific Islander | 10 | 0.12% |
| Black or African American | 8 | 0.1% |
Lemhi County's average per capita income is $35,153. Household income levels show a median of $53,202. The poverty rate stands at 12.84%.
Name | Median | Mean |
|---|---|---|
| Married Families | $79,564 | - |
| Families | $74,429 | $90,349 |
| Households | $53,202 | $74,280 |
| Non Families | $26,230 | $49,196 |
Average Income
Median Household Income
Poverty Rate
