Custer County's estimated 2025 population is 4,533 with a growth rate of 0.11% 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 4.04% since that time.
Data after 2023 is projected based on recent change
The racial composition of Custer County includes 89.93% White, and smaller percentages for Asian, other race, Native American, Black or African American, Native Hawaiian or Pacific Islander and multiracial populations.
White
Two or more races
Asian
Other race
Native American
Black or African American
Native Hawaiian or Pacific Islander
Race | Population | Percentage (of total) |
|---|---|---|
| White | 3,967 | 89.93% |
| Two or more races | 253 | 5.74% |
| Asian | 117 | 2.65% |
| Other race | 43 | 0.97% |
| Native American | 19 | 0.43% |
| Black or African American | 12 | 0.27% |
| Native Hawaiian or Pacific Islander | 0 | 0% |
Married
Widowed
Divorced
Separated
Never Married
Custer County's average per capita income is $23,782. Household income levels show a median of $56,957. The poverty rate stands at 11.55%.
Name | Median | Mean |
|---|---|---|
| Families | $72,946 | $78,912 |
| Married Families | $71,932 | - |
| Households | $56,957 | $65,974 |
| Non Families | $23,500 | $41,446 |
Average Income
Median Household Income
Poverty Rate
