Knox County's 2026 population is estimated at 35,562, reflecting a -0.43% growth rate over the past year (World Population Review estimate based on U.S. Census Bureau data). Knox County is the 45th largest county in Indiana. The 2010 population was 38,394 and has grown -7.38% since 2010.
Data after 2023 is projected based on recent change
Overall: 39 years
Female: 41.2 years
Male: 37.5 years
There are 28,220 adults, (6,877 of whom are seniors) in Knox County.
Female: 17,756 (49.3%)
Male: 18,251 (50.7%)
The racial composition of Knox County includes 89.72% White, and smaller percentages for Black or African American, other race, Asian, Native American, Native Hawaiian or Pacific Islander and multiracial populations.
| Race | Population ↓ | Percentage (of total) |
|---|---|---|
| White | 32,307 | 89.72% |
| Two or more races | 2,386 | 6.63% |
| Black or African American | 604 | 1.68% |
| Other race | 376 | 1.04% |
| Asian | 310 | 0.86% |
| Native American | 20 | 0.06% |
| Native Hawaiian or Pacific Islander | 4 | 0.01% |
Knox County 's average per capita income is $45,774. Household income levels show a median of $61,237. The poverty rate stands at 13.69%.
| Name | Median ↓ | Mean |
|---|---|---|
| Married Families | $92,898 | $113,489 |
| Families | $80,990 | $99,974 |
| Households | $61,237 | $81,626 |
| Non Families | $36,706 | $50,550 |
Average Income
Median Household Income
Poverty Rate
