LaSalle County's 2026 population is estimated at 108,376, reflecting a -0.01% growth rate over the past year (World Population Review estimate based on U.S. Census Bureau data). LaSalle County is the 17th largest county in Illinois. The 2010 population was 113,812 and has grown -4.78% since 2010.
Data after 2023 is projected based on recent change
Overall: 42.2 years
Female: 43.4 years
Male: 40.7 years
There are 85,694 adults, (21,669 of whom are seniors) in LaSalle County.
Female: 53,302 (49%)
Male: 55,412 (51%)
The racial composition of LaSalle County includes 85.5% White, 3.77% other race, and smaller percentages for Black or African American, Asian, Native American, Native Hawaiian or Pacific Islander and multiracial populations.
| Race | Population ↓ | Percentage (of total) |
|---|---|---|
| White | 92,952 | 85.5% |
| Two or more races | 7,736 | 7.12% |
| Other race | 4,099 | 3.77% |
| Black or African American | 2,796 | 2.57% |
| Asian | 911 | 0.84% |
| Native American | 210 | 0.19% |
| Native Hawaiian or Pacific Islander | 10 | 0.01% |
LaSalle County 's average per capita income is $48,490. Household income levels show a median of $73,045. The poverty rate stands at 13.91%.
| Name | Median ↓ | Mean |
|---|---|---|
| Married Families | $107,331 | $126,565 |
| Families | $90,095 | $108,196 |
| Households | $73,045 | $93,009 |
| Non Families | $43,034 | $61,246 |
Average Income
Median Household Income
Poverty Rate
