How big is Koh Samui Thailand?

Koh Samui is situated in the Gulf of Thailand, off the eastern coast of the Kra Isthmus. Covering a total land area of 228.7 square kilometers, the island measures up to 25 kilometers in length and 21 kilometers in width. Its tallest peak reaches an elevation of 635 meters (2,083 feet). According to data from 2024, the population of Koh Samui stands at 50,000 residents.

Reference: Population of Cities in Thailand 2024 (worldpopulationreview.com)