Fremont County's 2026 population is estimated at 14,681, reflecting a 0.97% growth rate over the past year (World Population Review estimate based on U.S. Census Bureau data). Fremont County is the 24th largest county in Idaho. The 2010 population was 13,232 and has grown 10.95% since 2010.
Data after 2023 is projected based on recent change
Overall: 40 years
Female: 40 years
Male: 40 years
There are 10,603 adults, (2,547 of whom are seniors) in Fremont County.
Female: 6,589 (47.3%)
Male: 7,354 (52.7%)
The racial composition of Fremont County includes 85.38% White, 5.96% 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 | 11,905 | 85.38% |
| Two or more races | 1,008 | 7.23% |
| Other race | 831 | 5.96% |
| Native American | 128 | 0.92% |
| Black or African American | 45 | 0.32% |
| Asian | 15 | 0.11% |
| Native Hawaiian or Pacific Islander | 11 | 0.08% |
Fremont County 's average per capita income is $40,339. Household income levels show a median of $72,683. The poverty rate stands at 10.07%.
| Name | Median ↓ | Mean |
|---|---|---|
| Married Families | $83,333 | - |
| Families | $79,330 | $100,088 |
| Households | $72,683 | $93,018 |
| Non Families | $45,565 | $60,303 |
Average Income
Median Household Income
Poverty Rate