[mjn]

There are a few others as well. As of the 2023-2024 cycle, there are 13 ways to be considered independent (any one of them suffices), according to the official list [1]. To summarize them here:

1. Born before Jan 1, 2000; 2. Married; 3. Will be attending grad school [2]; 4. Active-duty U.S. military; 5. U.S. military veteran; 6. Have dependent children; 7. Have live-in dependents other than children; 8. Both parents deceased and/or were a foster child or a ward of the court after age 13; 9. Current or former emancipated minor; 10. Legal guardian is someone other than parent or stepparent; 11,12,13. Homeless or at-risk-of-homelessness within the past year (three different routes of determination).

[1] https://studentaid.gov/2324/help/need-parent-info

[2] Graduate students in the U.S. generally don't get the kind of need-based financial aid that undergrads do, though, so this one is often not very helpful.