| District ▲ | Winner | Party | Votes | % | Margin |
|---|---|---|---|---|---|
| IL-01 | Bobby L RushDEM | DEM | 271,397 | 85.9% | D+71.7 |
| IL-02 | DEM | 280,776 | 89.4% | D+78.8 | |
| IL-03 | DEM | 235,524 | 73.3% | D+51.9 | |
| IL-04 | DEM | 139,606 | 80.6% | D+69.1 | |
| IL-05 | Rahm EmanuelDEM | DEM | 230,892 | 73.9% | D+51.9 |
| IL-06 | REP | 256,913 | 57.6% | R+15.1 | |
| IL-07 | DEM | 276,817 | 85.0% | D+70.0 | |
| IL-08 | DEM | 295,525 | 60.7% | D+21.4 | |
| IL-09 | DEM | 243,694 | 74.7% | D+52.7 | |
| IL-10 | REP | 291,258 | 52.6% | R+5.1 | |
| IL-11 | DEM | 317,895 | 58.4% | D+23.9 | |
| IL-12 | DEM | 298,181 | 71.4% | D+46.5 | |
| IL-13 | Judy BiggertREP | REP | 337,771 | 53.5% | R+9.9 |
| IL-14 | Bill FosterDEM | DEM | 321,057 | 57.8% | D+15.5 |
| IL-15 | REP | 291,514 | 64.2% | R+28.4 | |
| IL-16 | REP | 312,220 | 60.9% | R+24.8 | |
| IL-17 | Phil HareDEM | DEM | 221,478 | 99.8% | D+99.8 |
| IL-18 | Aaron SchockREP | REP | 310,088 | 58.9% | R+20.9 |
| IL-19 | REP | 315,589 | 64.5% | R+31.1 |