Gem County's estimated 2026 population is 22,803 with a growth rate of 2.12% 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 36.66% 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 and multiracial populations.
White (87.25%)
Two or more races (8.5%)
Other race (3.45%)
Native American (0.39%)
Asian (0.23%)
Black or African American (0.19%)
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% |
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
