The Casualties of battle are these:
| Killed | Wounded | Missing | Total | % of Total | |
| Union | 3,155 | 14,530 | 5,365 | 23,040 | 27% |
| Confederate | 2,600-4,500 | 12,800 | 5,250 | 20,650-25,000 | 30%-34% |
| Union Casualties by Corps |
| I Corps | II Corps | III Corps | V Corps | VI Corps | XI Corps | XII Corps | Cavalry Corps | Artillery Corps | |
| 6,060 | 4,370 | 4,210 | 2,190 | 240 | 3,800 | 1,080 | 850 | 240 |
| Confederate Casualties by Corps |
| I Corps | II Corps | III Corps | Cavalry Division |
| 7,575 | 5,935 | 6,935 | 240 |
After the battle, Lee retreated down through Maryland and back to Virginia. Meade decided not to pursue due to the defensive grounds in the mountains. Meade's decision not to pursue made Lincoln extremely angry, cause he knew he could have ended the war with one fatal attack after Pickett's charge. Unfortunatly, Meade didn't realize this until it was too late, and the war continued for two more bloody years.