Kootenai County's 2026 population is estimated at 195,330, reflecting a 1.81% growth rate over the past year (World Population Review estimate based on U.S. Census Bureau data). Kootenai County is the 3rd largest county in Idaho. The 2010 population was 138,860 and has grown 40.67% since 2010.
Overall: 40.9 years
Female: 42.2 years
Male: 40.1 years
There are 141,340 adults, (36,591 of whom are seniors) in Kootenai County.
Female: 91,097 (50.1%)
Male: 90,899 (49.9%)
The racial composition of Kootenai County includes 87.11% White, and smaller percentages for other race, Native American, Asian, Black or African American, Native Hawaiian or Pacific Islander and multiracial populations.
| Race | Population ↓ | Percentage (of total) |
|---|---|---|
| White | 158,537 | 87.11% |
| Two or more races | 16,783 | 9.22% |
| Other race | 3,191 | 1.75% |
| Native American | 1,493 | 0.82% |
| Asian | 1,264 | 0.69% |
| Black or African American | 644 | 0.35% |
| Native Hawaiian or Pacific Islander | 84 | 0.05% |
Kootenai County 's average per capita income is $49,186. Household income levels show a median of $81,861. The poverty rate stands at 9.04%.
| Name | Median ↓ | Mean |
|---|---|---|
| Married Families | $106,289 | $130,212 |
| Families | $98,171 | $119,902 |
| Households | $81,861 | $103,508 |
| Non Families | $46,317 | $61,462 |
Average Income
Median Household Income
Poverty Rate