Cassia County's estimated 2026 population is 26,584 with a growth rate of 0.71% in the past year according to the most recent United States census data. Cassia County is the 15th largest county in Idaho. The 2010 population was 23,080 and has seen a growth of 15.18% since that time.
Data after 2023 is projected based on recent change
Overall: 33.2 years
Female: 33.4 years
Male: 33 years
There are 17,604 adults, (3,693 of whom are seniors) in Cassia County.
Female: 12,397 (48.6%)
Male: 13,086 (51.4%)
The racial composition of Cassia County includes 69.38% White, 14.76% other race, and smaller percentages for Native American, Black or African American, Asian, Native Hawaiian or Pacific Islander and multiracial populations.
Race | Population | Percentage (of total) |
|---|---|---|
| White | 17,679 | 69.38% |
| Other race | 3,762 | 14.76% |
| Two or more races | 3,397 | 13.33% |
| Native American | 456 | 1.79% |
| Black or African American | 118 | 0.46% |
| Asian | 67 | 0.26% |
| Native Hawaiian or Pacific Islander | 4 | 0.02% |
Cassia County's average per capita income is $42,650. Household income levels show a median of $70,830. The poverty rate stands at 12.41%.
Name | Median | Mean |
|---|---|---|
| Married Families | $89,204 | - |
| Families | $81,218 | $97,140 |
| Households | $70,830 | $92,485 |
| Non Families | $33,333 | $70,596 |
Average Income
Median Household Income
Poverty Rate
