Bonneville County's 2026 population is estimated at 137,982, reflecting a 1.6% growth rate over the past year (World Population Review estimate based on U.S. Census Bureau data). Bonneville County is the 4th largest county in Idaho. The 2010 population was 104,682 and has grown 31.81% since 2010.
Data after 2023 is projected based on recent change
Overall: 33.6 years
Female: 33.7 years
Male: 33.5 years
There are 90,920 adults, (17,950 of whom are seniors) in Bonneville County.
Female: 64,551 (49.8%)
Male: 64,972 (50.2%)
The racial composition of Bonneville County includes 84.26% White, 4.94% other race, and smaller percentages for Asian, Native American, Black or African American, Native Hawaiian or Pacific Islander and multiracial populations.
| Race | Population ↓ | Percentage (of total) |
|---|---|---|
| White | 109,136 | 84.26% |
| Two or more races | 10,994 | 8.49% |
| Other race | 6,404 | 4.94% |
| Asian | 1,181 | 0.91% |
| Native American | 1,058 | 0.82% |
| Black or African American | 566 | 0.44% |
| Native Hawaiian or Pacific Islander | 184 | 0.14% |
Bonneville County 's average per capita income is $47,313. Household income levels show a median of $79,068. The poverty rate stands at 9.77%.
| Name | Median ↓ | Mean |
|---|---|---|
| Married Families | $102,974 | $129,180 |
| Families | $93,472 | $116,539 |
| Households | $79,068 | $102,874 |
| Non Families | $48,408 | $65,254 |
Average Income
Median Household Income
Poverty Rate