Ratchasan District

Ratchasan District (, ) is a district ("amphoe") in the central part of Chachoengsao Province, central Thailand.
History.
The area of Ratchasan was separated from Phanom Sarakham District and became a minor district ("king amphoe") on 16 February 1977. It was upgraded to a full district on 4 July 1994.
Geography.
Neighboring districts are (from the east clockwise): Phanom Sarakham, Plaeng Yao, and Bang Khla of Chachoengsao Province; and Ban Sang of Prachinburi Province.
The important water resource is the Khlong Tha Lat.
Administration.
Central administration.
Ratchasan is divided into three sub-districts ("tambons"), which are further subdivided into 31 administrative villages ("mubans").
Local administration.
There are three sub-district administrative organizations (SAO) in the district: