 According to the United States Census Bureau the island has a land area of 203.78 ha (0.7868 sq mi, or 503.55 acres), and a population of 184 persons as of the 2000 census.Recreation

Sand Island is home to Sand Island State Park, which offers picnicking, camping, walking, shore fishing and board surfing.It fronts a small sand beach and has good views of Honolulu Harbor and ocean sunsets.