These winners are the officially recognized champions by US Squash, the national governing body.
When the national governing body began recognizing international softball as the official game in the United States, the national championship also switched to softball.
The first softball Women's National Championship was conducted in 1994 and was won by Demer Holleran.
The National Hardball Championship would continue past this date, but was no longer recognized as the official Women's National Championship.
The championship was not held in 1942-1946 due to World War II, or in 2020 and 2021 to the COVID-19 pandemic.