Twin Falls County's estimated 2026 population is 98,611 with a growth rate of 1.1% in the past year according to the most recent United States census data. Twin Falls County is the 5th largest county in Idaho. The 2010 population was 77,547 and has seen a growth of 27.16% since that time.
Data after 2023 is projected based on recent change
Overall: 36.1 years
Female: 36.6 years
Male: 35.6 years
There are 69,062 adults, (15,548 of whom are seniors) in Twin Falls County.
Female: 47,222 (50.4%)
Male: 46,512 (49.6%)
The racial composition of Twin Falls County includes 78.61% White, 7.6% other race, and smaller percentages for Asian, Black or African American, Native American, Native Hawaiian or Pacific Islander and multiracial populations.
Race | Population | Percentage (of total) |
|---|---|---|
| White | 73,685 | 78.61% |
| Two or more races | 10,210 | 10.89% |
| Other race | 7,126 | 7.6% |
| Asian | 1,096 | 1.17% |
| Black or African American | 828 | 0.88% |
| Native American | 494 | 0.53% |
| Native Hawaiian or Pacific Islander | 295 | 0.31% |
Twin Falls County's average per capita income is $42,787. Household income levels show a median of $67,409. The poverty rate stands at 11.48%.
Name | Median | Mean |
|---|---|---|
| Married Families | $97,345 | $112,002 |
| Families | $82,414 | $100,695 |
| Households | $67,409 | $90,415 |
| Non Families | $37,173 | $58,468 |
Average Income
Median Household Income
Poverty Rate