Olio is located in Woodford County, Illinois. Olio has a 2025 population of 4,668 . Olio is currently declining at a rate of -0.32% annually and its population has decreased by -0.81% since the most recent census, which recorded a population of 4,706 in 2020.
The average household income in Olio is $77,465 with a poverty rate of 15.3%. The median age in Olio is 40 years: 32.1 years for males, and 44.8 years for females. For every 100 females there are 86.1 males.
Data after 2023 is projected based on recent change
The racial composition of Olio includes 92.6% White, and smaller percentages for other race, Black or African American, Asian and multiracial populations.
White (92.6%)
Two or more races (3.5%)
Other race (1.92%)
Black or African American (1.75%)
Asian (0.23%)
Race | Population | Percentage (of total) |
|---|---|---|
| White | 4,342 | 92.6% |
| Two or more races | 164 | 3.5% |
| Other race | 90 | 1.92% |
| Black or African American | 82 | 1.75% |
| Asian | 11 | 0.23% |
Married
Widowed
Divorced
Separated
Never Married
Olio's average per capita income is $48,269. Household income levels show a median of $54,375. The poverty rate stands at 15.3%.
Name | Median | Mean |
|---|---|---|
| Married Families | $96,071 | - |
| Families | $85,918 | $99,015 |
| Households | $54,375 | $77,465 |
| Non Families | $26,154 | $49,049 |
Average Income
Median Household Income
Poverty Rate