Gem County's estimated 2025 population is 22,305 with a growth rate of 2.84% in the past year according to the most recent United States census data. Gem County is the 19th largest county in Idaho. The 2010 population was 16,686 and has seen a growth of 33.67% since that time.
Data after 2023 is projected based on recent change
The racial composition of Gem County includes 87.25% White, 3.45% other race, and smaller percentages for Native American, Asian, Black or African American, Native Hawaiian or Pacific Islander and multiracial populations.
White
Two or more races
Other race
Native American
Asian
Black or African American
Native Hawaiian or Pacific Islander
Race | Population | Percentage (of total) |
|---|---|---|
| White | 17,322 | 87.25% |
| Two or more races | 1,687 | 8.5% |
| Other race | 684 | 3.45% |
| Native American | 78 | 0.39% |
| Asian | 46 | 0.23% |
| Black or African American | 37 | 0.19% |
| Native Hawaiian or Pacific Islander | 0 | 0% |
Married
Widowed
Divorced
Separated
Never Married
Gem County's average per capita income is $42,045. Household income levels show a median of $66,245. The poverty rate stands at 10.43%.
Name | Median | Mean |
|---|---|---|
| Married Families | $84,507 | - |
| Families | $75,265 | $98,433 |
| Households | $66,245 | $87,429 |
| Non Families | $27,791 | $47,595 |
Average Income
Median Household Income
Poverty Rate
