Amagasaki is an industrial city located in Hyōgo Prefecture, Japan. As of 30 November 2022, the city had an estimated population of 455,555 in 223812 households, and a population density of 9000 persons per km². The total area of the city is 50.72 km2 (19.58 sq mi).

The Fukuchiyama Line is a railway line operated by West Japan Railway Company connecting Osaka and Fukuchiyama, Japan. Within JR West's "Urban Network" covering the Osaka–Kobe–Kyoto metropolitan region, the line from Osaka to Sasayamaguchi is also called the JR Takarazuka Line (JR宝塚線). The line traverses the cities of Kawanishi and Takarazuka in the northwestern corner of the Osaka metropolitan area.