As of 2005, the ward has an estimated population of 334,464 and a density of 14720 persons per km². The total area is 22.72 km².
History
The ward was founded on March 15, 1947.
Geography
Shinagawa includes natural uplands and lowlands, as well as reclaimed land. The uplands are the eastern end of the Musashino hills. They include Shiba Shiroganedai north of the Meguro River, Megurodai between the Meguro and Tachiai Rivers, and Ebaradai south of the Tachiai River.
The ward lies on Tokyo Bay. Its neighbors on land are all special wards of Tokyo: Koto to the east, Minato to the north, Meguro to the west, and Ota to the south.
The ward consists of five districts:
* the Shinagawa district, including the former Shinagawa post on the Tokaido * the Osaki district, formerly a town, stretching from Osaki Station to Gotanda and Meguro Stations * the Ebara district, formerly a town of that name * the Oi district, previously the town * the Yashio district, consisting of reclaimed land