| Girls | |||||
| Age | Distance | Stroke | Time | Date | Record Holder |
| 5-6 | 25 | Free | 19.40 | 18-Aug-90 | Linsey Gibson at ISL 1990 Championships |
| 25 | Back | 22.38 | 18-Aug-90 | Linsey Gibson at ISL 1990 Championships | |
| 25 | Breast | 26.22 | 04-Aug-12 | Gwen Baxter at ISL 2012 Championships | |
| 25 | Fly | 22.28 | 07-Aug-04 | Morganne Goodson at ISL 2004 Championships | |
| 7-8 | 25 | Free | 15.38 | 07-Jul-12 | Claire Poissonnier v. Turtle Rock Highland 2012 |
| 25 | Back | 19.04 | 24-Jun-06 | Morganne Goodson v. Turtle Rock Highland 2006 | |
| 25 | Breast | 19.72 | 12-Jul-08 | Kate Lee at Deerfield 2008 | |
| 25 | Fly | 16.87 | 17-Jun-17 | Cara Chow v. Northwood Pointe 2017 | |
| 9-10 | 50 | Free | 29.79 | 13-Aug-22 | Marlowe Nuttall at ISL 2022 Championships |
| 50 | Back | 34.44 | 08-Jul-06 | Julia Rausch v. Deerfield 2006 | |
| 50 | Breast | 38.78 | 16-Aug-14 | Claire Poissonnier at ISL 2014 Championships | |
| 50 | Fly | 32.74 | 13-Aug-22 | Marlowe Nuttall at ISL 2022 Championships | |
| 100 | IM | 1:15:31 | 08-Aug-92 | Amanda Beard at ISL 1992 Championships | |
| 11-12 | 50 | Free | 28.05 | 12-Aug-06 | Melanie Wong at ISL 2006 Championships |
| 50 | Back | 32.13 | 16-Jul-22 | Nicole Yang v. College Park 2022 | |
| 50 | Breast | 32.91 | 16-Jul-22 | Nicole Yang v. College Park 2022 | |
| 50 | Fly | 30.98 | 03-Aug-24 | Marlowe Nuttall at ISL 2024 Championships | |
| 100 | IM | 1:06:62 | 16-Jul-22 | Nicole Yang v. College Park 2022 | |
| 13-14 | 50 | Free | 26.38 | 08-Jul-17 | Jade Thai at Turtle Rock Highland 2017 |
| 50 | Back | 29.72 | 17-Jun-17 | Jade Thai v. Northwood Pointe 2017 | |
| 50 | Breast | 31.23 | 12-Aug-23 | Nicole Yang at ISL 2023 Championships | |
| 50 | Fly | 28.12 | 15-Jul-17 | Jade Thai at Village Park 2017 | |
| 100 | IM | 1:02:80 | 03-Aug-24 | Nicole Yang at ISL 2024 Championships | |
| 15-18 | 50 | Free | 25.75 | 29-Jul-00 | Megan McGuire v. Turtle Rock Highland 2000 |
| 50 | Back | 29.86 | 08-Aug-09 | Jessica Tran at ISL 2009 Championships | |
| 50 | Breast | 30.06 | 05-Aug-17 | Kate Lee at ISL 2017 Championships | |
| 50 | Fly | 27.71 | 05-Aug-17 | Kate Lee at ISL 2017 Championships | |
| 100 | IM | 59.72 | 05-Aug-17 | Kate Lee at ISL 2017 Championships | |
| Boys | |||||
| Age | Distance | Stroke | Time | Date | Record Holder |
| 5-6 | 25 | Free | 17.61 | 13-Aug-11 | Cullen Chow at ISL 2011 Championships |
| 25 | Back | 22.65 | 09-Aug-97 | Joey Dedeaux at ISL 1997 Championships | |
| 25 | Breast | 20.91 | 11-Jul-98 | Joey Dedeaux v. Turtle Rock Highland 1998 | |
| 25 | Fly | 19.58 | 13-Aug-11 | Cullen Chow at ISL 2011 Championships | |
| 7-8 | 25 | Free | 14.31 | 22-Jun-13 | Cullen Chow at Turtle Rock Highland 2013 |
| 25 | Back | 18.61 | 05-Aug-89 | Bobby Lanza at ISL 1989 Championships | |
| 25 | Breast | 20.00 | 17-Jul-99 | Joey Dedeaux v. Turtle Rock Glen 1999 | |
| 25 | Fly | 16.34 | 14-Jul-99 | Joey Dedeaux at ISL 1999 Pentathlon | |
| 9-10 | 50 | Free | 28.69 | 13-Aug-05 | Mason Wong at ISL 2005 Championships |
| 50 | Back | 34.41 | 18-Jul-15 | Cullen Chow v. Woodbridge 2015 | |
| 50 | Breast | 38.41 | 25-Jun-22 | Tanner Hays v. Deerfield 2022 | |
| 50 | Fly | 31.88 | 08-Aug-15 | Cullen Chow at 2015 ISL Championships | |
| 100 | IM | 1:12:18 | 08-Aug-15 | Cullen Chow at 2015 ISL Championships | |
| 11-12 | 50 | Free | 25.33 | 11-Aug-07 | Kyle Lee at 2007 ISL Championship |
| 50 | Back | 29.56 | 25-Jun-11 | Teddy T. Pham v. Westpark 2011 | |
| 50 | Breast | 32.22 | 24-Jun-06 | Travis Pham v. Turtle Rock Highland 2006 | |
| 50 | Fly | 28.38 | 11-Aug-07 09-Aug-25 |
Mason Wong at ISL 2007 Championships Hudson Minsky at ISL 2025 Championships |
|
| 100 | IM | 1:02:59 | 05-Aug-17 | Cullen Chow at ISL 2017 Championships | |
| 13-14 | 50 | Free | 23.17 | 16-Aug-14 | Jacob Lee at ISL 2014 Championships |
| 50 | Back | 26.93 | 12-Aug-00 | Josh Clark at ISL 2000 Championships | |
| 50 | Breast | 28.43 | 03-Aug-19 | Cullen Chow at ISL 2019 Championships | |
| 50 | Fly | 25.88 | 17-Jul-19 | Cullen Chow at 2019 Pentathlon | |
| 100 | IM | 56.58 | 03-Aug-19 | Cullen Chow at ISL 2019 Championships | |
| 15-18 | 50 | Free | 21.47 | 07-Aug-04 | Josh Clark at ISL 2007 Championships |
| 50 | Back | 24.50 | 14-Aug-10 | Mark Falz at ISL 2010 Championships | |
| 50 | Breast | 26.80 | 14-Aug-10 | Kevin Barbrick at ISL 2010 Championships | |
| 50 | Fly | 23.44 | 07-Aug-04 | Josh Clark at ISL 2004 Championships | |
| 100 | IM | 54.16 | 14-Aug-10 | Kevin Barbrick at ISL 2010 Championships | |
| Mixed Relays | |||||
| Age | Distance | Stroke | Time | Date | Record Holders |
| 5-6 | 100 | Free Relay | 01:28.37 | 14-Aug-10 | Joshua Baxter, China Poblete, Caleb Chow, Cullen Chow at ISL 2010 Championships |
| 100 | Medley Relay | 01:37.36 | 08-Aug-18 | Amaya Guttery, Owen Wong, Tanner Hays, Marlowe Nuttall at ISL 2018 Championships | |
| 7-8 | 100 | Free Relay | 01:05.61 | 04-Aug-12 | Caleb Chow, Joshua Baxter, Cullen Chow, Claire Poissonnier at ISL 2012 Championships |
| 100 | Medley Relay | 01:16.40 | 12-Aug-89 | Amanda Beard, Jana Draper, Bobby Lanza, Jonathan Patty at ISL 1989 Championships | |
| 9-10 | 200 | Free Relay | 01:57.59 | 22-Aug-13 | Marlowe Nuttall, Ryu Nguyen, Tanner Hays, Hudson Minsky at ISL 2022 Championships |
| 200 | Medley Relay | 02:23.80 | 16-Aug-14 | Caleb Chow, Claire Poissonnier, Annaka Lee, Cullen Chow at ISL 2014 Championships | |
| 11-12 | 200 | Free Relay | 01:49.37 | 12-Aug-23 | Tanner Hays, Marlowe Nuttall, Bella Kuo, Justin Sun at ISL 2023 Championships |
| 200 | Medley Relay | 02:02.94 | 12-Aug-06 | Camille Poissonneir, Travis Pham, Mason Wong, Kyle Lee at ISL 2006 Championships | |
| 13-14 | 200 | Free Relay | 01:41.71 | 11-Aug-18 | Brandon Yang, Arianna Carter, Caleb Chow, Cullen Chow at ISL 2018 Championships |
| 200 | Medley Relay | 01:50.36 | 09-Aug-08 | Mason Wong, Melanie Wong, Travis Pham, Chris Allmann at ISL 2008 Championships | |
| 15-18 | 200 | Free Relay | 01:33.64 | 13-Aug-22 | Joshua Baxter, Lilly Huffmire, Caleb Chow, Cullen Chow at ISL 2022 Championships |
| 200 | Medley Relay | 01:43.46 | 08-Aug-09 | Mark Falz, Travis Pham, Lynne Kohlhase, Joey DeDeaux at ISL 2009 Championships | |