| Event | Time | Meet | Date |
|---|---|---|---|
| 100m Backstroke | 1:08.15 | 2025 Age Group International SC | 2025-11-27 |
| 100m Breaststroke | 1:14.72 | 2025 Age Group International SC | 2025-11-27 |
| 100m Butterfly | 1:04.28 | 2025 Age Group International SC | 2025-11-27 |
| 100m Freestyle | 57.76 | 2025 Age Group International SC | 2025-11-27 |
| 1500m Freestyle | 11.36 | Gus Ryder Memorial Cup 2025 | 2025-11-07 |
| 200m Backstroke | 2:28.63 | Gus Ryder Memorial Cup 2025 | 2025-11-07 |
| 200m Breaststroke | 2:38.70 | Gus Ryder Memorial Cup 2025 | 2025-11-07 |
| 200m Butterfly | 2:17.20 | Gus Ryder Memorial Cup 2025 | 2025-11-07 |
| 200m Freestyle | 2:03.08 | Gus Ryder Memorial Cup 2025 | 2025-11-07 |
| 200m IM | 2:18.73 | 2025 Age Group International SC | 2025-11-27 |
| 400m Freestyle | 4:18.12 | Gus Ryder Memorial Cup 2025 | 2025-11-07 |
| 400m IM | 4:51.70 | Gus Ryder Memorial Cup 2025 | 2025-11-07 |
| 50m Backstroke | 31.70 | 2025 Age Group International SC | 2025-11-27 |
| 50m Breaststroke | 34.98 | 2025 Age Group International SC | 2025-11-27 |
| 50m Butterfly | 30.07 | 2025 Age Group International SC | 2025-11-27 |
| 50m Freestyle | 27.05 | 2025 Age Group International SC | 2025-11-27 |
| 800m Freestyle | 8:49.78 | 2025 Age Group International SC | 2025-11-27 |
Cooper, Isabella's top personal bests include 100m Backstroke (1:08.15), 100m Breaststroke (1:14.72), 100m Butterfly (1:04.28), 100m Freestyle (57.76), 1500m Freestyle (11.36).
Cooper, Isabella swims for Lakeshore Swim Club.
Cooper, Isabella has competed in 4 meets.