Native Hawaiians refers to the indigenous Polynesia

Polynesia

Polynesia is a subregion of Oceania, made up of over 1,000 islands scattered over the central and southern Pacific Ocean. The indigenous people who inhabit the islands of Polynesia are termed Polynesians and they share many similar traits including language, culture and beliefs...

n people of the Hawaiian Islands

Hawaiian Islands

The Hawaiian Islands are an archipelago of eight major islands, several atolls, numerous smaller islets, and undersea seamounts in the North Pacific Ocean, extending some 1,500 miles from the island of Hawaii in the south to northernmost Kure Atoll...

 or their descendants. Native Hawaiians trace their ancestry back to the original Polynesian settlers of Hawaii.

According to the U.S. Census Bureau

United States Census Bureau

The United States Census Bureau is the government agency that is responsible for the United States Census. It also gathers other national demographic and economic data...

 report for 2000, there are 401,162 people who identified themselves as being "native Hawaiian" alone or in any combination. 140,652 people identified themselves as being "native Hawaiian" alone.