Kasai District, Hokkaido

The area of Kasai District in Tokachi Subprefecture.

Kasai (河西郡, Kasai-gun) is a district located in Tokachi Subprefecture, Hokkaido, Japan.

As of 2004, the district has an estimated population of 25,474 and a density of 25.91 persons per km2. The total area is 983.05 km2.