Boys Swim & Dive Cobb County Records (Yards):
| Event | Time | Year | School | Athlete(s) |
| 200 Medley Relay | 1:33.06 | 2015 | Walton | Froemming, Macon, Dingess, Williams |
| 200 Freestyle | 1:37.12 | 2018 | Sprayberry | Ananda Lin |
| 200 Individual Medley | 1:48.83 | 2019 | Lassiter | Zach Franklin |
| 50 Freestyle | 20.27 | 2021 | Mt. Paran | Mitchell Norton |
| 1 Meter, 11 Dives | 552.75 | 2021 | Harrison | Alex Scott |
| 1 Meter, 12 Dives | 654.90 | 2022 | Lassiter | Carter Loftin |
| 100 Butterfly | 48.16 | 2013 | Lassiter | Jimmy Yoder |
| 100 Freestyle | 44.66 | 2021 | Mt. Paran | Mitchell Norton |
| 500 Freestyle | 4:29.19 | 2013 | Lassiter | Jimmy Yoder |
| 200 Freestyle Relay | 1:24.87 | 2013 | Lassiter | Bridges, Bunner, Marshall, Yoder |
| 100 Backstroke | 49.32 | 2021 | Mt. Paran | Mitchell Norton |
| 100 Breaststroke | 55.17 | 2020 | Kennesaw Mt. | Connor Haigh |
| 400 Freestyle Relay | 3:06.12 | 2013 | Lassiter | Bridges, Bunner, Marshall, Yoder |
Girls Swim & Dive Cobb County Records (Yards):
| Event | Time | Year | School | Athlete(s) |
| 200 Medley Relay | 1:44.99 | 2022 | Lassiter | Tilt, O’Shaughnessy, Parker, Carson |
| 200 Freestyle | 1:48.65 | 2013 | Kennesaw Mt. | Rebecca Postoll |
| 200 Individual Medley | 1:59.12 | 2022 | Lassiter | Elizabeth Tilt |
| 50 Freestyle | 23.10 | 2009 | Walton | Erin Reisinger |
| 1 Meter, 11 Dives | 554.90 | 2021 | Allatoona | Hannah Stumpf |
| 1 Meter, 12 Dives | 641.65 | 2022 | Allatoona | Hannah Stumpf |
| 100 Butterfly | 53.30 | 2022 | Lassiter | Elizabeth Tilt |
| 100 Freestyle | 48.76 | 2017 | Walton | Emma Cole |
| 500 Freestyle | 4:48.39 | 2013 | Kennesaw Mt. | Rebecca Postoll |
| 200 Freestyle Relay | 1:33.50 | 2017 | Walton | Hoffman, Cox, Gauntt, Arsenault |
| 100 Backstroke | 53.71 | 2009 | Walton | Erin Reisinger |
| 100 Breaststroke | 1:01.73 | 2022 | Walton | Elizabeth Isakson |
| 400 Freestyle Relay | 3:24.44 | 2017 | Walton | Arsenault, Gauntt, Cox, Cole |
