Gem County's estimated 2026 population is 22,096 with a growth rate of 1.48% 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 32.42% since that time.
Data after 2023 is projected based on recent change
Overall: 44.2 years
Female: 45 years
Male: 42.9 years
There are 16,091 adults, (4,755 of whom are seniors) in Gem County.
Female: 9,994 (48.5%)
Male: 10,620 (51.5%)
The racial composition of Gem County includes 86.15% White, 3.58% other race, and smaller percentages for Asian, Native American, Black or African American and multiracial populations.
Race | Population | Percentage (of total) |
|---|---|---|
| White | 17,758 | 86.15% |
| Two or more races | 1,803 | 8.75% |
| Other race | 737 | 3.58% |
| Asian | 159 | 0.77% |
| Native American | 155 | 0.75% |
| Black or African American | 2 | 0.01% |
Gem County's average per capita income is $40,172. Household income levels show a median of $64,605. The poverty rate stands at 11.98%.
Name | Median | Mean |
|---|---|---|
| Married Families | $87,107 | - |
| Families | $74,981 | $94,699 |
| Households | $64,605 | $86,642 |
| Non Families | $31,133 | $52,630 |
Average Income
Median Household Income
Poverty Rate
