About Kahuku Federal Credit Union Kahuku FCU was chartered on July 28, 1937 to serve the employees of the Kahuku Plantation Company, a cane sugar plantation. The plantation ceased operations in 1971, and on June 1, 1972 the credit union’s charter was amended to include residents who lived near the local post office. The credit union’s field of membership was again expanded on April 9, 1987 and remains today to include persons who reside or work in that part of the City and County of Honolulu, Hawaii designated by the U.S. Bureau of Census as Census Tracts 101, 102.01, and 102.02. These Tracts are known as the Koolauloa District and includes the towns of Pupukea, Sunset Beach, Kahuku, Laie, Hauula, Punaluu, and Kaaawa