Wailuku is located at (20.891923, -156.502177)[REF] between the CDPs of Waihee-Waiehu to the north, Kahului to the east, and Waikapu to the south.
The town is situated at above sea level, at the base of West Maui Volcano, known historically as Mauna Kahalawai and Hale Mahina, on the northern edge of the isthmus of East Maui (Haleakalā) and West Maui.