Yes, Swann Danger is definitely a goth band because most of their albums belong to the Gothic Rock genre, which is a core subgenre of goth music. Albums like Deep North, Demo, and Swann Danger are examples of their goth sound.
Swann Danger is located in United States, California, Oakland, active in 2002 — 2010. You can find more information about Swann Danger on their GothDB band page.
Want to check if another band is goth? Search other bands.