Kamalasai district
Kamalasai is a district (amphoe) in the southern part of Kalasin Province in northeastern Thailand. It is home to the ancient city site Mueang Fa Daet Song Yang, where archaeologists have found bricks mixed with soil, a two-story moat, and an oval Dvaravati city plan that shows early urban growth. Excavations uncovered 130 Bai Sema sandstone boundary markers. Kamalasai also hosts Phra That Yaku, the district’s largest chedi from the Dvaravati period (7th–11th centuries). The name Kamalasai means “lotus flower.”
Geography and neighbors: Kamalasai borders Khong Chai, Mueang Kalasin, and Don Chan in Kalasin Province; Pho Chai and Changhan in Roi Et Province; and Rong Kham in Kalasin Province.
Area and population: The district covers about 325.3 square kilometers and had a population of around 69,700 in 2015, with a density of roughly 214 people per square kilometer.
Administration: Kamalasai is divided into eight sub-districts (tambons) and 111 villages (mubans). Some tambons now form Khong Chai District. There are five sub-district municipalities (thesaban tambons) and five sub-district administrative organizations (SAOs) for local governance. The name Kamalasai means “lotus flower.”
This page was last edited on 2 February 2026, at 22:51 (CET).