Kailua-kona is a census-designated place (CDP) in Hawaii County, Hawaii, in the North Kona District of the Island of Hawaii. The CDP's population during the 2010 census was 11,975. It is called Kailua-kona to differentiat it from the larger CDP in Honolulu county named Kailua.
It is the center of commerce and of the tourist industry on West Hawaii. Kailua is also the start and finish of the annual Ironman World Championship triathlon, the annual Kona Coffee Festival, and the Hawaiian International Billfish Tournament. Tourism activities include diving and snorkeling.