Sagami Province was a province of Japan located in what is today the central and western Kanagawa Prefecture. Sagami Province bordered the provinces of Izu, Musashi, and Suruga. It had access to the Pacific Ocean through Sagami Bay. However, most of the present-day cities of Yokohama and Kawasaki, now part of Kanagawa Prefecture, were not in Sagami, but rather, in Musashi Province. Its abbreviated form name was Sōshū (相州).

Hiratsuka is a city in Kanagawa Prefecture, Japan. As of 1 April 2021, the city had an estimated population of 257,316 and a population density of 3800 persons per km². The total area of the city is 67.88 square kilometres (26.21 sq mi).