Yes, Earth Calling Angela 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 Charts And Wonders and Hope Springs Eternal (Demos And Abandoned Recordings 1992-96) are examples of their goth sound.
One of the other goth artists that is similar to them is Eternal Joy.
Earth Calling Angela is located in United States, San Francisco, active in 1992 — 2012. You can find more information about Earth Calling Angela on their GothDB band page.