| Time | Date | Name | Meet |
|---|---|---|---|
| 48.77 | Dec. 9, 2023 | Annie Jia | Speedo Winter Junior Championship East |
| 49.00 | Dec. 10, 2022 | Annie Jia | Speedo Winter Junior Championship East |
| 50.01 | March 25, 2022 | Annie Jia | Middle Atlantic Senior Championships |
| 50.15 | Dec. 8, 2018 | Abbie Amdor | Speedo Winter Junior Championships - East |
| 50.57 | March 31, 2018 | Abbie Amdor | Middle Atlantic Short Course Senior Championships |
| 51.17 | Dec. 9, 2017 | Abbie Amdor | Speedo Winter Junior Championships - East |
| 51.86 | Dec. 11, 2016 | Abbie Amdor | PV NCAP Tom Dolan Invitational |
| 52.12 | Dec. 13, 2015 | Jenna Johns | PV NCAP December Invitational (Senior Results Only) |
| 52.28 | Dec. 14, 2014 | Jenna Johns | PV NCAP Tom Dolan Invitational |
| 53.52 | March 27, 2011 | Carolyn Meier | Middle Atlantic Short Course Senior Championships |
| 55.08 | March 26, 2011 | Samantha Wheatley | Middle Atlantic Short Course Senior Championships |
