On April 1, 1946, the Hawaiian Islands were struck by the so-called "April Fools Day tsunami", originating from the Aleutian Islands earthquake. Approximately 159 people in the islands were killed. The tsunami had the largest impact on the Big Island, with the greatest number of deaths occurring in Hilo with 96 fatalities. The school building at Laupāhoehoe was inundated by the tsunami and 24 people drowned. Of the dead, 16 were schoolchildren, four were teachers, and four were residents. A monument to the dead now stands on Laupāhoehoe Point.
Founding dates: Wikidata, Wikipedia, the U.S. post office records of Blevins & Helbock (CC0) and the Census. Homes by year built: Census ACS 2020–24. National Register of Historic Places: National Park Service (list of May 22, 2026). Old photos, postcards and papers: Wikimedia Commons, the Library of Congress and other public archives, credited on each item’s page. Maps: U.S. Geological Survey historical topographic maps (via Esri) and Sanborn fire-insurance maps (Library of Congress). History text and census tables: Wikipedia (CC BY-SA 4.0). Places that used to be: USGS Geographic Names Information System (2021). How TownRatings grades history →
From Wikipedia, U.S. Geological Survey historical maps, the US Post Offices dataset (Blevins & Helbock), the USGS Geographic Names Information System and Sanborn fire insurance maps (Library of Congress). Archive images are copied here with their credits and licenses, shown on each photo’s page. Refreshed monthly.