Tsurumi (鶴見区) is one of the 18 ku (wards) of the city of Yokohama in Kanagawa Prefecture, Japan. As of 2010, the ward had an estimated population of 270,433 and a density of 8,140 persons per km². The total area was 33.23 km². Tsurumi-ku is located in eastern Kanagawa Prefecture, in the northeast corner of the city of Yokohama. Tsurumi Ward is a regional commercial center and bedroom community for central Yokohama and Tokyo. The coastal area is part of the Keihin Industrial Zone, and is the most industrialized region within Yokohama.