The crossword solution for the term 'Town on Mauna Loa' is Hilo, which is a 4 letter word. Hilo is a city located on the eastern side of the Big Island of Hawaii. It is the largest settlement and census-designated place (CDP) in Hawaii County, Hawaii, United States, with a population of 43, 263 according to the 2010 census. Hilo is the county seat of Hawaii County and is situated in the South Hilo District. The town overlooks Hilo Bay, and is near two shield volcanoes, Mauna Loa, an active volcano, and Mauna Kea, a dormant volcano.