League Records
| Year | Name/Club | Time | Event | Time | Name/Club | Date |
| Girls | Boys | |||||
| 2014 | Jillian Johnson - WG | 1:10.58 | 12&U 100 IM | 1:08.25 | Jack Conger - MA | 2007 |
| 2019 | Olivia Jubin - BH | 1:04.18 | 18&U 100 IM | 56.86 | Ryan Baker - WG | 2016 |
| 2024 | Abigail Hartman - WG | 15.34 | 8&U 25 Free | 14.79 | Blake Potolicchio - KE | 1993 |
| 1980 | Melissa Douse - AN | 13.93 | 10&U 25 Free | 13.88 | Blake Conway - CG | 2016 |
| 1982 | Melissa Douse - AN | 27.48 | 12&U 50 Free | 26.76 | Brock Park - KE | 2002 |
| 2001 | Kassy Kugler - MA | 26.48 | 14&U 50 Free | 24.37 | Grant Goddard - CG | 2011 |
| 2003 | Kassy Kugler - MA | 26.59 | 18&U 50 Free | 23.43 | Ryan Baker - WG | 2016 |
| 2024 | Abigail Hartman - WG | 18.58 | 8&U 25 Back | 19.19 | Harrison Band - LA | 2024 |
| 1999 | Mackenzie Green - KE | 16.63 | 10&U 25 Back | 16.15 | Danis Kottak - KE | 2023 |
| 2024 | Lexi Johnson - NO | 31.46 | 12&U 50 Back | 30.39 | Blake Conway - CG | 2018 |
| 2025 | Lexi Johnson - NO | 29.85 | 14&U 50 Back | 27.35 | Brady Fox | 2005 |
| 2025 | Kate Douglas - AN | 29.51 | 18&U 50 Back | 25.34 | Blake Conway - CG | 2024 |
| 2024 | Congressional | 1:05.31 | Jr Medley Relay | 1:03.34 | Congressional | 2002 |
| 2014 | Kenwood | 58.42 | Sr Medley Relay | 56.56 | Washington Golf | 2014 |
| 1977 | Mary Parks - CH | 20.94 | 8&U 25 Breast | 19.94 | Tom Dolan - WG | 1984 |
| 1999 | Mackenzie Green - KE | 17.56 | 10&U 25 Breast | 17.84 | Austin Edmondson - CG | 2025 |
| 2025 | Sophia Meth - CH | 35.82 | 12&U 50 Breast | 34.41 | Richard Gentry - WG | 2013 |
| 2019 | Josie Gieseman - WG | 34.33 | 14&U 50 Breast | 30.36 | Tyler Kominski - AV | 2024 |
| 2018 | Olivia Jubin - BH | 33.40 | 18&U 50 Breast | 28.60 | Jack Carman - WG | 2022 |
| 1982 | Mary Dowling - ED | 17.31 | 8&U 25 Fly | 16.21 | Harrison Band - LA | 2024 |
| 1980 | Christie Smith - WG | 14.76 | 10&U 25 Fly | 14.49 | Blake Conway - CG | 2016 |
| 1982 | Christie Smith - WG | 29.41 | 12&U 50 Fly | 29.08 | Danny Calder - KE | 2013 |
| 1984 | Christie Smith - WG | 28.83 | 14&U 50 Fly | 26.69 | Grant Goddard - CG | 2011 |
| 2024 | Kate Douglas - AN | 28.42 | 18&U 50 Fly | 24.41 | Blake Conway - CG | 2024 |
| 1999 | Manor | 1:57.69 | Graduated Freestyle Relay | 1:49.00 | Washington Golf | 2014 |
Championship Meet Records
| Year | Name/Club | Time | Event | Time | Name/Club | Date |
| Girls | Boys | |||||
| 2004 | Blair Webb | 1:11.22 | 12&U 100 IM | 1:08.25 | Jack Conger - MA | 2007 |
| 2019 | Olivia Jubin - BH | 1:04.18 | 18&U 100 IM | 57.89 | Ryan Baker - WG | 2014 |
| 2024 | Abigail Hartman - WG | 15.34 | 8&U 25 Free | 15.38 | Stuart Wright - ED | 1994 |
| 2014 | Susan Rodgers - KE | 13.96 | 10&U 25 Free | 13.88 | Blake Conway - CG | 2016 |
| 1982 | Melissa Douse - AN | 27.48 | 12&U 50 Free | 26.76 | Brock Park - KE | 2002 |
| 2002 | Colleen Law - KE | 26.80 | 14&U 50 Free | 24.37 | Grant Goddard - CG | 2011 |
| 2013 | Isabelle Jubin - BH | 26.69 | 18&U 50 Free | 23.61 | Brady Welch - MA | 2014 |
| 2024 | Abigail Hartman - WG | 19.11 | 8&U 25 Back | 19.20 | Ted Egan - CG | 1971 |
| 1999 | Mackenzie Green - KE | 16.63 | 10&U 25 Back | 16.15 | Danis Kottak - KE | 2023 |
| 2024 | Lexi Johnson - NO | 31.46 | 12&U 50 Back | 30.39 | Blake Conway - CG | 2018 |
| 2025 | Lexi Johnson - NO | 29.85 | 14&U 50 Back | 27.35 | Brady Fox | 2005 |
| 2025 | Kate Douglas - AN | 29.51 | 18&U 50 Back | 25.34 | Blake Conway - CG | 2024 |
| 2024 | Congressional | 1:05.31 | Jr Medley Relay | 1:03.34 | Congressional | 2002 |
| 2014 | Kenwood | 58.42 | Sr Medley Relay | 57.32 | Bethesda | 2001 |
| 1977 | Mary Parks - CH | 20.94 | 8&U 25 Breast | 20.81 | Austin Edmondson - CG | 2023 |
| 1999 | Hilary Lambert - CH | 17.63 | 10&U 25 Breast | 17.84 | Austin Edmondson - CG | 2025 |
| 2013 | Erica Hjelle - NO | 36.11 | 12&U 50 Breast | 34.59 | Ryan Tramonte - WG | 2024 |
| 2019 | Josie Gieseman - WG | 34.33 | 14&U 50 Breast | 30.36 | Tyler Kominski - AV | 2024 |
| 2018 | Olivia Jubin - BH | 33.40 | 18&U 50 Breast | 28.60 | Jack Carman - WG | 2022 |
| 2019 | McKinley Busen - AN | 17.84 | 8&U 25 Fly | 16.55 | Harrison Band - LA | 2024 |
| 1982 | Mary Dowling - ED | 15.29 | 10&U 25 Fly | 14.49 | Blake Conway - CG | 2016 |
| 2025 | Ellie Hook - CG | 30.33 | 12&U 50 Fly | 29.34 | Blake Conway - CG | 2018 |
| 2014 | Olivia Jubin - BH | 29.10 | 14&U 50 Fly | 26.69 | Grant Goddard - CG | 2011 |
| 2024 | Kate Douglas - AN | 28.42 | 18&U 50 Fly | 24.41 | Blake Conway | 2024 |
| 1999 | Manor | 1:57.69 | Graduated Freestyle Relay | 1:49.00 | Washington Golf | 2014 |
Relay Championship Records
| Year | Club | Time | Event | Time | Club | Year |
| Girls | Boys | |||||
| 2009 | Washington Golf | 1:11.68 | 8&U 100 Free Relay | 1:08.12 | Washington Golf | 2014 |
| 2014 | Washington Golf | 1:01.04 | 10&U 100 Free Relay | 1:00.28 | Kenwood | 2014 |
| 2016 | Washington Golf | 2:02.44 | 12&U 200 Free Relay | 2:00.81 | Washington Golf | 2012 |
| 2009 | Congressional | 1:56.81 | 14&U 200 Free Relay | 1:47.77 | Washington Golf | 2015 |
| 2025 | Army Navy | 1:51.65 | 18&U 200 Free Relay | 1:38.10 | Washington Golf | 2014 |
| 2016 | Washington Golf | 1:23.70 | 8&U 100 Medley Relay | 1:18.03 | Washington Golf | 2014 |
| 2014 | Washington Golf | 1:08.20 | 10&U 100 Medley Relay | 1:09.01 | Washington Golf | 2014 |
| 2016 | Washington Golf | 2:17.90 | 12&U 200 Medley Relay | 2:11.09 | Washington Golf | 2013 |
| 2015 | Washington Golf | 2:08.56 | 14&U 200 Medley Relay | 1:58.42 | Washington Golf | 2015 |
| 2016 | Norbeck | 2:01.86 | 18&U 200 Medley Relay | 1:48.52 | Washington Golf | 2022 |
| 2025 | Army Navy | 2:29.89 | Crescendo Relay | 2:19.42 | Washington Golf | 2014 |
