Kasuya is a district located in Fukuoka Prefecture, Japan, east of Fukuoka City. As of 2003, the district has an estimated population of 200,503 and a density of 1,218.05 persons per km2. The total area is 164.61 km2. It has four stations on the Sasaguri Line, seven on the Kashii Line. Chojabaru Station serves both lines.