# Ko Si Chang, Chon Buri Province – Subdistricts & Population > Source: https://wherepedia.org/thailand/chon-buri/ko-si-chang/ District · Chon Buri Province # Ko Si Chang Ko Si Chang is a district (amphoe) of Thailand in Chon Buri Province. It had an estimated **1,700 people** in 2023 on 7 km² (about 240 per km²). Its main town is Ko Si Chang. It is divided into 1 subdistricts. 8 named villages and localities are recorded here, and 104 mapped services such as hospitals, banks and schools. - 1,700people (2023) - 7.1km² - 1subdistricts - 104mapped services ## How many people live in Ko Si Chang? Ko Si Chang had an estimated **1,700 people** in 2023 — 0.1% of Chon Buri Province, the least populous of 928 districts. There are 1,163 women for every 1,000 men (above the Chon Buri Province figure of 981). Spread over 7 km², that is about **240 people per km²**, 156th of 928 districts. 15.1% of people are children under 15 and 13.1% are 65 or older; the median age is about 43 years (it is 38 across Chon Buri Province). For every 100 people of working age (15–64) there are 39 children and older people. 0–4 ****32** 5–9 ****117** 10–14 ****107** 15–19 ****97** 20–24 ****88** 25–29 ****95** 30–34 ****134** 35–39 ****98** 40–44 ****148** 45–49 ****148** 50–54 ****143** 55–59 ****160** 60–64 ****110** 65–69 ****91** 70–74 ****55** 75–79 ****46** 80+ ****31** Source: [National Statistics Office of Thailand via OCHA HDX, population 2023 (COD-PS, CC BY-IGO)](https://data.humdata.org/dataset/cod-ps-tha). ## Where is Ko Si Chang? Ko Si Chang lies in [Chon Buri Province](https://wherepedia.org/thailand/chon-buri/), [Thailand](https://wherepedia.org/thailand/). By area it is the 922nd largest of 928 districts in Thailand. It covers 0.2% of [Chon Buri Province](https://wherepedia.org/thailand/chon-buri/). The centre of Ko Si Chang is about 75 km in a straight line from Bangkok, the capital. It is about 30 km from Chon Buri, the main town of Chon Buri Province. The centre point is at 13.1526° N, 100.8094° E. Local names: เกาะสีชัง . Source: [Royal Thai Survey Department via OCHA HDX, administrative boundaries (COD-AB, CC BY-IGO)](https://data.humdata.org/dataset/cod-ab-tha). ## Subdistricts of Ko Si Chang Subdistrict Area km² Localities Services [Tha Thewawong](https://wherepedia.org/thailand/chon-buri/ko-si-chang/tha-thewawong/) 7.1 8 104 Source: [Royal Thai Survey Department via OCHA HDX, administrative boundaries (COD-AB, CC BY-IGO)](https://data.humdata.org/dataset/cod-ab-tha); [GeoNames (CC BY 4.0) — settlements, natural and historic features](https://www.geonames.org/); [Overture Maps places (CDLA-Permissive-2.0) and © OpenStreetMap contributors (ODbL)](https://overturemaps.org/). ## Villages and localities in Ko Si Chang Open gazetteers list **8 villages, towns and localities** in Ko Si Chang. Settlements here lie between about 10 m and 63 m above sea level (median 27 m). - Ban Ko Kham Yai - Ban San Chao Keng - Ban Saphan Khu - Ban Tha Thewawong - Ban Tha Wang - Ban Trok Dan Phasi - Ko Si Chang - Saphan Khoo Community Source: [GeoNames (CC BY 4.0) — settlements, natural and historic features](https://www.geonames.org/); [© OpenStreetMap contributors (ODbL), Geofabrik extract — named settlements](https://www.openstreetmap.org/copyright). ## Landscape and landmarks of Ko Si Chang Named natural and historic features inside Ko Si Chang, from the GeoNames gazetteer. ### Coast and islands 7 headlands; 6 islands. - Ko Kham Noi - Ko Kham Yai - Ko Khang Khao - Ko Ran Dok Mai - Ko Thai Ta Muen - Ko Yai Thao - Laem Hin Khao - Laem Hin Tewit - Laem Khao Khat - Laem Si Chang - Laem Takhop - Laem Tha Wang - Laem Tukkata ### Hills and mountains 4 hills. - Khao Chunlachomklao · 182 m - Khao Khwang · 119 m - Khao Sao Thong · 32 m - Khao Yai · 32 m Source: [GeoNames (CC BY 4.0) — settlements, natural and historic features](https://www.geonames.org/). Places of worship are not listed. Elevations are from the GeoNames terrain model and are approximate. ## Weather in Ko Si Chang and the best time to visit In Ko Si Chang, the warmest month is May (average 30 °C) and the coolest is Dec (26 °C). About 1,348 mm of rain falls in a year; the wettest month is Sep (239 mm) and the driest Dec (14 mm). The most comfortable months for a visit are **November to February**. - Jan - Feb - Mar - Apr - May - Jun - Jul - Aug - Sep - Oct - Nov - Dec Month Average °C Rain mm Jan 27 25 Feb 27 18 Mar 28 56 Apr 29 72 May 30 152 Jun 29 160 Jul 28 160 Aug 28 149 Sep 28 239 Oct 28 237 Nov 28 64 Dec 26 14 Source: [NASA POWER climatology, retrieved 2026-10-29](https://power.larc.nasa.gov/). ## Hospitals, banks and other services in Ko Si Chang Places mapped inside Ko Si Chang in open map data, by type — each number opens the full list with locations. - Hospitals4 - Banks2 - Petrol pumps1 - Hotels59 - Schools1 - Colleges and universities1 - Restaurants34 - Police stations2 Source: [Overture Maps places (CDLA-Permissive-2.0) and © OpenStreetMap contributors (ODbL)](https://overturemaps.org/). Coverage depends on what has been mapped; contact details are not shown. ## Quick answers - Where is Ko Si Chang?In Chon Buri Province, Thailand - What is the population of Ko Si Chang?1,700 (2023 estimate) - What is the median age in Ko Si Chang?About 43 years (2023 estimate) - What is the population density of Ko Si Chang?About 240 people per km² - How many villages are in Ko Si Chang?8 named settlements (GeoNames, OpenStreetMap) - What is the elevation of Ko Si Chang?Settlements lie between 10 m and 63 m - What is the highest point in Ko Si Chang?Khao Chunlachomklao (182 m, GeoNames elevation model) - What is the best time to visit Ko Si Chang?November to February - How many hospitals are in Ko Si Chang?4 mapped - How many banks are in Ko Si Chang?2 mapped - How many petrol pumps are in Ko Si Chang?1 mapped - What is the P-code of Ko Si Chang?TH2008 (OCHA common operational dataset)