| District ▲ | Winner | Party | Votes | % | Margin |
|---|---|---|---|---|---|
| OH-01 | Steve ChabotREP | REP | 202,264 | 52.3% | R+4.5 |
| OH-02 | Jean SchmidtREP | REP | 238,081 | 50.5% | R+1.1 |
| OH-03 | REP | 218,628 | 58.5% | R+17.1 | |
| OH-04 | Jim JordanREP | REP | 216,636 | 60.0% | R+20.0 |
| OH-05 | REP | 228,357 | 56.9% | R+13.7 | |
| OH-06 | DEM | 218,476 | 62.1% | D+24.2 | |
| OH-07 | REP | 227,478 | 60.6% | R+21.2 | |
| OH-08 | REP | 214,503 | 63.8% | R+27.6 | |
| OH-09 | Marcy KapturDEM | DEM | 208,999 | 73.6% | D+47.3 |
| OH-10 | DEM | 208,389 | 66.4% | D+32.8 | |
| OH-11 | DEM | 175,924 | 83.4% | D+66.9 | |
| OH-12 | REP | 254,689 | 57.3% | R+14.6 | |
| OH-13 | Betty SuttonDEM | DEM | 221,561 | 61.2% | D+22.4 |
| OH-14 | REP | 250,322 | 57.5% | R+18.5 | |
| OH-15 | REP | 220,567 | 50.2% | R+0.5 | |
| OH-16 | REP | 235,122 | 58.3% | R+16.7 | |
| OH-17 | Tim RyanDEM | DEM | 212,294 | 80.3% | D+60.5 |
| OH-18 | DEM | 208,905 | 62.1% | D+24.1 |