Hilo (/ˈhiːloʊ/; Hawaiian: [ˈhilo]) is the largest settlement and census-designated place (CDP) in Hawaii County, Hawaii, United States, which encompasses the Island of Hawaiʻi. The population was 43,263 at the 2010 census.
Hilo is the county seat of the County of Hawaiʻi and is in the District of South Hilo. The town overlooks Hilo Bay, at the base of two shield volcanoes, Mauna Loa, an active volcano, and Mauna Kea, a dormant volcano and the site of some of the world's most important ground-based astronomical observatories. Much of the city is at some risk from lava flows from Mauna Loa. The majority of human settlement in Hilo stretches from Hilo Bay to Waiākea-Uka, on the flanks of Mauna Loa.
Hilo is home to the University of Hawaiʻi at Hilo, ʻImiloa Astronomy Center of Hawaiʻi, as well as the Merrie Monarch Festival, a week-long celebration of ancient and modern hula that takes place annually after Easter. Hilo is also home to the Mauna Loa Macadamia Nut Corporation, one of the world's leading producers of macadamia nuts. The town is served by Hilo International Airport.
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