東京都議会
Hamura has a mayor-council form of government with a directly elected mayor and a unicameral city council of 18 members. Hamura, collectively with Fussa, Akiruno, Mizuho, Hinode, Hinohara, and Okutama contributes two members to the Tokyo Metropolitan Assembly. In terms of national politics, the city is part of Tokyo 25th district of the lower house of the Diet of Japan.