| Event | Time | Meet | Date |
|---|---|---|---|
| 100m Backstroke | 1:35.22 | 2026 Mallards Winter LC Invitational | 2026-01-30 |
| 100m Backstroke | 1:33.89 | 2025 Alex Baumann Invitational | 2025-11-21 |
| 100m Breaststroke | 1:54.31 | MAC Summer Invitational | 2025-07-24 |
| 100m Breaststroke | 1:47.73 | 2026 Central Region Div 2 SC Championships | 2026-02-20 |
| 100m Butterfly | 1:34.74 | 2026 Mallards Winter LC Invitational | 2026-01-30 |
| 100m Butterfly | 1:33.49 | 2026 Central Region Div 2 SC Championships | 2026-02-20 |
| 100m Freestyle | 1:28.26 | MAC Rising Star #2 | 2025-05-30 |
| 100m Freestyle | 1:22.53 | MAC Jingle Bell | 2025-12-12 |
| 100m IM | 1:30.01 | 2025 Murray Drudge Invitational | 2025-12-05 |
| 200m Backstroke | 3:14.52 | 2026 Mallards Winter LC Invitational | 2026-01-30 |
| 200m Backstroke | 3:14.81 | MAC Jingle Bell | 2025-12-12 |
| 200m Breaststroke | 4:22.37 | MAC Rising Star #2 | 2025-05-30 |
| 200m Breaststroke | 3:46.36 | MAC Jingle Bell | 2025-12-12 |
| 200m Butterfly | 3:33.31 | 2025 Alex Baumann Invitational | 2025-11-21 |
| 200m Freestyle | 2:56.96 | 2026 Mallards Winter LC Invitational | 2026-01-30 |
| 200m Freestyle | 2:57.03 | RHAC Fall Classic 2025 | 2025-10-24 |
| 200m IM | 3:21.80 | 2026 Mallards Winter LC Invitational | 2026-01-30 |
| 200m IM | 3:16.17 | RHAC Fall Classic 2025 | 2025-10-24 |
| 400m Freestyle | 6:19.89 | 2026 Mallards Winter LC Invitational | 2026-01-30 |
| 400m Freestyle | 6:07.29 | 2025 Murray Drudge Invitational | 2025-12-05 |
| 50m Backstroke | 44.75 | 2026 Mallards Winter LC Invitational | 2026-01-30 |
| 50m Backstroke | 43.65 | MAC Jingle Bell | 2025-12-12 |
| 50m Breaststroke | 53.11 | MAC Summer Invitational | 2025-07-24 |
| 50m Breaststroke | 50.50 | RHAC Fall Classic 2025 | 2025-10-24 |
| 50m Butterfly | 42.21 | 2026 Mallards Winter LC Invitational | 2026-01-30 |
| 50m Butterfly | 40.49 | 2025 Murray Drudge Invitational | 2025-12-05 |
| 50m Freestyle | 41.65 | MAC Rising Star #2 | 2025-05-30 |
| 50m Freestyle | 37.91 | MAC Jingle Bell | 2025-12-12 |
Jacob Jang's top personal bests include 100m Backstroke (1:35.22), 100m Backstroke (1:33.89), 100m Breaststroke (1:54.31), 100m Breaststroke (1:47.73), 100m Butterfly (1:34.74).
Jacob Jang swims for Swim Apex Aquatic Club.
Jacob Jang has competed in 12 meets.