Yes, Voodoo Church is definitely a goth band because most of their albums belong to the Deathrock genre, which is a core subgenre of goth music. Albums like Voo-Doo Church, Unholy Burial, and Eminence Of Demons are examples of their goth sound.
Voodoo Church is located in United States, California, Los Angeles, active in 1981 — 1983, 2002 — 2009. You can find more information about Voodoo Church on their GothDB band page.