Hamura (羽村市, Hamura-shi) is a city located in the western end of Tokyo Metropolis, Japan.As of 2010, the city has an estimated population of 57,145 and a population density of 5,770 persons per km2. The total area is 9.91 km2 (3.83 sq mi) . The J-Pop singing duet Cazacy calls Hamura home.