Lemhi County's estimated 2026 population is 8,297 with a growth rate of -0.6% in the past year according to the most recent United States census data. Lemhi County is the 34th largest county in Idaho. The 2010 population was 7,952 and has seen a growth of 4.34% since that time.
Data after 2023 is projected based on recent change
The racial composition of Lemhi County includes 92.1% White, and smaller percentages for other race, Native American, Native Hawaiian or Pacific Islander, Asian, Black or African American and multiracial populations.
White (92.1%)
Two or more races (5.19%)
Other race (1.33%)
Native American (0.77%)
Native Hawaiian or Pacific Islander (0.33%)
Asian (0.26%)
Black or African American (0.01%)
Race | Population | Percentage (of total) |
|---|---|---|
| White | 7,521 | 92.1% |
| Two or more races | 424 | 5.19% |
| Other race | 109 | 1.33% |
| Native American | 63 | 0.77% |
| Native Hawaiian or Pacific Islander | 27 | 0.33% |
| Asian | 21 | 0.26% |
| Black or African American | 1 | 0.01% |
Married
Widowed
Divorced
Separated
Never Married
Lemhi County's average per capita income is $33,426. Household income levels show a median of $52,057. The poverty rate stands at 11.78%.
Name | Median | Mean |
|---|---|---|
| Married Families | $80,977 | - |
| Families | $73,176 | $87,401 |
| Households | $52,057 | $72,897 |
| Non Families | $23,504 | $54,422 |
Average Income
Median Household Income
Poverty Rate
