Cassia County's estimated 2025 population is 25,800 with a growth rate of 0.2% in the past year according to the most recent United States census data. Cassia County is the 16th largest county in Idaho. The 2010 population was 23,080 and has seen a growth of 11.79% since that time.
Data after 2023 is projected based on recent change
The racial composition of Cassia County includes 72.3% White, 13.41% other race, and smaller percentages for Native American, Asian, Black or African American, Native Hawaiian or Pacific Islander and multiracial populations.
White
Other race
Two or more races
Native American
Asian
Black or African American
Native Hawaiian or Pacific Islander
Race | Population | Percentage (of total) |
|---|---|---|
| White | 18,194 | 72.3% |
| Other race | 3,375 | 13.41% |
| Two or more races | 3,243 | 12.89% |
| Native American | 254 | 1.01% |
| Asian | 74 | 0.29% |
| Black or African American | 21 | 0.08% |
| Native Hawaiian or Pacific Islander | 4 | 0.02% |
Married
Widowed
Divorced
Separated
Never Married
Cassia County's average per capita income is $41,121. Household income levels show a median of $67,042. The poverty rate stands at 10.27%.
Name | Median | Mean |
|---|---|---|
| Married Families | $88,585 | - |
| Families | $76,731 | $95,643 |
| Households | $67,042 | $88,788 |
| Non Families | $31,173 | $59,911 |
Average Income
Median Household Income
Poverty Rate
