Kīlauea is an unincorporated community and census-designated place (CDP) in Kauaʻi County, Hawaii, United States. As of the 2020 census it had a population of 3,014.^[2]

Kīlauea shares the name of the active volcano Kīlauea on the island of Hawaii. The name translates to "spewing" or "much spreading" in the Hawaiian language.^[3]

Kīlauea is on the northeastern shore of Kauai and is bordered to the west by Kalihiwai and to the north by the Pacific Ocean. Hawaii Route 56 passes through the south side of the community, leading west 7 miles (11 km) to Hanalei and east 6 miles (10 km) to the Moloaa area which includes Moloaa Forest Reserve and overlooks Moloaa Bay.

According to the U.S. Census Bureau, the Kilauea CDP has a total area of 5.3 square miles (13.6 km²), of which 4.9 square miles (12.8 km²) are land and 0.3 square miles (0.8 km²), or 5.71%, are water.^[2]

As of the 2020 census, there were 3,014 people, 1,093 housing units, and 934 families in the CDP. There were 1,544 White people, 9 African Americans, 16 Native Americans, 622 Asians, 138 Pacific Islanders, 72 people from some other race, and 613 people from two or more races. 286 people had Hispanic or Latino origin.^[4]

The ancestry was 16.6% German, 13.1% Irish, 7.6% Italian, 6.2% English, 4.3% French, 3.6% Norwegian, 2.1% Portuguese, and 1.4% Greek.^[4]

The median age was 40.3 years old. 18.4% of the population were 65 or older, with 14.5% between the ages of 65 to 74, 3.7% between the ages of 75 to 84, and 0.2% were 85 or older.^[4]

The median income was $86,765, with families having $92,986, married couples having $126,250, and non-families $59,097. 15.5% of the population were in poverty.^[4]