Custer County's estimated 2026 population is 4,690 with a growth rate of 1.16% in the past year according to the most recent United States census data. Custer County is the 40th largest county in Idaho. The 2010 population was 4,357 and has seen a growth of 7.64% since that time.
Data after 2023 is projected based on recent change
Overall: 60 years
Female: 57.7 years
Male: 61.9 years
There are 3,847 adults, (1,634 of whom are seniors) in Custer County.
Female: 2,152 (48.1%)
Male: 2,318 (51.9%)
The racial composition of Custer County includes 89.15% White, 3.06% Asian, and smaller percentages for other race, Native American, Black or African American and multiracial populations.
Race | Population | Percentage (of total) |
|---|---|---|
| White | 3,985 | 89.15% |
| Two or more races | 234 | 5.23% |
| Asian | 137 | 3.06% |
| Other race | 83 | 1.86% |
| Native American | 17 | 0.38% |
| Black or African American | 14 | 0.31% |
Custer County's average per capita income is $24,760. Household income levels show a median of $67,574. The poverty rate stands at 15.78%.
Name | Median | Mean |
|---|---|---|
| Families | $80,860 | $88,734 |
| Married Families | $80,848 | - |
| Households | $67,574 | $70,154 |
| Non Families | - | $37,433 |
Average Income
Median Household Income
Poverty Rate
