Kapaa is a cdp located in Kauai County, in the state of Hawaii (HI), United States. Nestled in the Pacific division of the West region, it covers an area of 9.8 square miles (25.0 km²) and sits at an elevation of 10 ft. With a population of approximately 9,472 residents, Kapaa offers a peaceful, rural atmosphere.
The town's population is composed of about 49.54% males and 50.46% females, and it has a population density of 971.49 people per square mile (375.09/km²). Kapaa lies at a latitude of 22.09 and a longitude of -159.34, operating in the UTC-6.
Locals reflect a blend of American ancestry, with roots primarily in United States (0%), followed by English (3.8%), German (4.8%), and Scotch-Irish (0%) heritage. The town is identified by the ZIP code 96746.