61866 can be classified socioeconomically as Lower Middle Class class compared to other ZIP Codes in Illinois based on Median Household Income and Average Adjusted Gross Income. The majority race/ethnicity residing in 61866 is White. The majority race/ethnicity attending public schools in 61866 is White. The current unemployment level in 61866 is 5.2%.
| Population | 13,442 |
| Population Growth Rate | 0.00% |
| Population Density | 183 People per Square Mile |
| Total Households | 5,604 |
| Percentage High Income Households | 1.6% |
| Median Household Income (2021) | $45,445 |
| Average Adjusted Gross Income (2021) | $325,890 |
| Current Unemployment Rate (May 2026) | 5.2% |
| Sales Tax Rate (2025) | 9.0% |
| Majority Race/Ethnicty | White - 66.08% |
| Public School Majority Race/Ethnicty | White - 30.58% |
61866 Race/Ethnicty Breakdown
| Race/Ethnicty | Total | Percentage |
| White | 8,667 | 66.08% |
| Black | 2,500 | 19.06% |
| Hispanic | 1,716 | 13.08% |
| Asian | 199 | 1.52% |
| Native American | 33 | 0.25% |
| Hawaiian/Pac. Islander | 0 | 0% |
61866 Public School Race/Ethnicty Breakdown
| Race/Ethnicty | Total | Percentage |
| White | 756 | 34.85% |
| Black | 659 | 30.38% |
| Hispanic | 737 | 33.98% |
| Asian | 12 | 0.55% |
| Native American | 4 | 0.18% |
| Hawaiian/Pac. Islander | 1 | 0.05% |
61866 Educational Attainment Levels
| Highest Education Level Attained | Total | Percentage |
| Less Than 1 Year of College | 914 | 11.5% |
| Bachelor Degree | 1,056 | 13.29% |
| High School Diploma | 2,772 | 34.88% |
| No High School Diploma | 74 | 0.93% |
| GED or Alternate | 597 | 7.51% |
| 1 or More Years of College | 1,589 | 19.99% |
| Associates Degree | 509 | 6.4% |
| Masters Degree | 337 | 4.24% |
| Professional Degree | 73 | 0.92% |
| Doctorate Degree | 27 | 0.34% |