# Khao Chamao, Rayong Province – Subdistricts, Population & Map > Source: https://wherepedia.org/thailand/rayong/khao-chamao/ District · Rayong Province # Khao Chamao Khao Chamao is a district (amphoe) of Thailand in Rayong Province. It had an estimated **25,416 people** in 2023 on 477 km² (about 53 per km²). Its main town is Khao Chamao. It is divided into 4 subdistricts. 41 named villages and localities are recorded here, and 51 mapped services such as hospitals, banks and schools. - 25,416people (2023) - 477km² - 4subdistricts - 51mapped services ## How many people live in Khao Chamao? Khao Chamao had an estimated **25,416 people** in 2023 — 1.9% of Rayong Province, 662nd of 928 districts. There are 976 women for every 1,000 men (close to the Rayong Province figure of 971). Spread over 477 km², that is about **53 people per km²**, 733rd of 928 districts. 19.4% of people are children under 15 and 13.7% are 65 or older; the median age is about 40 years (it is 36 across Rayong Province). For every 100 people of working age (15–64) there are 50 children and older people. 0–4 ****1,691** 5–9 ****1,596** 10–14 ****1,656** 15–19 ****1,424** 20–24 ****1,297** 25–29 ****1,578** 30–34 ****1,713** 35–39 ****1,709** 40–44 ****1,990** 45–49 ****2,021** 50–54 ****1,872** 55–59 ****1,805** 60–64 ****1,583** 65–69 ****1,412** 70–74 ****909** 75–79 ****624** 80+ ****536** 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 Khao Chamao? Khao Chamao lies in [Rayong Province](https://wherepedia.org/thailand/rayong/), [Thailand](https://wherepedia.org/thailand/). It borders 4 other districts: [Bo Thong](https://wherepedia.org/thailand/chon-buri/bo-thong/), [Kaeng Hang Maeo](https://wherepedia.org/thailand/chanthaburi/kaeng-hang-maeo/), [Klaeng](https://wherepedia.org/thailand/rayong/klaeng/) and [Wang Chan](https://wherepedia.org/thailand/rayong/wang-chan/). By area it is the 438th largest of 928 districts in Thailand. It covers 13.0% of [Rayong Province](https://wherepedia.org/thailand/rayong/). The centre of Khao Chamao is about 152 km in a straight line from Bangkok, the capital. It is about 56 km from Rayong, the main town of Rayong Province. The centre point is at 12.9968° N, 101.6659° E. Local names: เขาชะเมา . 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 Khao Chamao Subdistrict Area km² Localities Services [Cham Kho](https://wherepedia.org/thailand/rayong/khao-chamao/cham-kho/) 103 8 9 [Huai Thap Mon](https://wherepedia.org/thailand/rayong/khao-chamao/huai-thap-mon/) 192 20 20 [Khao Noi](https://wherepedia.org/thailand/rayong/khao-chamao/khao-noi/) 78 8 5 [Nam Pen](https://wherepedia.org/thailand/rayong/khao-chamao/nam-pen/) 103 7 17 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 Khao Chamao Open gazetteers list **41 villages, towns and localities** in Khao Chamao. Settlements here lie between about 21 m and 139 m above sea level (median 60 m). - Ban Cham Kho - Ban Fok Laen - Ban Hin Khom - Ban Hoi Hua - Ban Khao Chan - Ban Khao Chong Lom - Ban Khao Loi - Ban Khao Noi - Ban Khao Phai - Ban Khao Phang - Ban Khlong Hin - Ban Khlong Phlo - Ban Khlong Phrachao - Ban Khlong Sai - Ban Khlong Wai - Ban Khlong Wai Pong - Ban Khlong Yang - Ban Khong Ta Wan - Ban Maduea - Ban Mueang Rae - Ban Nam Kroi - Ban Nam Pen - Ban Nam Sai - Ban Nam Sap Charoen - Ban Noen Yao - Ban Nong Mai Kaen - Ban Nong Plalai - Ban Pak Phraek - Ban Prong Sathon - Ban Sam Yaek Nam Pen - Ban Sam Yaek Ton Sai - Ban Samnak Krabao - Ban Sap Sanae - Ban Si Pracha - Ban Si Raman - Ban Si Yaek Phatthana - Ban Suan Khanun - Ban Takhop - Ban Yang En - Khao Chamao - Nam Pen 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 Khao Chamao Named natural and historic features inside Khao Chamao, from the GeoNames gazetteer. ### Water 6 reservoirs and tanks; 4 rivers and streams; 1 waterfall. - Ang Kep Nam Sap Charoen - Khlong Khao Chuk - Khlong Maduea - Khlong Phlo - Khlong Ra-ok - Nam Tok Khao Chamao - Sa Nam Ban Khao Noi - Sa Nam Ban Khao Phai - Sa Nam Ban Sap Sanae - Sa Nam Ban Si Raman - Sa Nam Ban Takhop ### Hills and mountains 16 hills; 4 mountains. - Khao Hoi Hua · 406 m - Khao Cha-om · 343 m - Khao Cha-ang Ngon Ngaen · 334 m - Khao Plai Khlong Phlo · 304 m - Khao Phang · 256 m - Khao Yang Rae · 234 m - Khao Tham Bot · 191 m - Khao Chan · 156 m - Khao Cha-ang Song Khrueang · 152 m - Khao Ra-Ang · 149 m - Khao Nong Khla · 140 m - Khao Wong Wian · 137 m - Khao Loi · 135 m - Khao Chong Lom · 133 m - Khao Cha-ang · 130 m - Khao Prathun · 130 m - Khao Kammakan · 125 m - Khao Noi · 83 m - Khao Cha-ang Tham Ta Men · 64 m - Khao Wong Wian · 54 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 Khao Chamao and the best time to visit In Khao Chamao, the warmest month is Apr (average 28 °C) and the coolest is Dec (23 °C). About 2,052 mm of rain falls in a year; the wettest month is Sep (369 mm) and the driest Dec (9 mm). The most comfortable months for a visit are **November to March**. - Jan - Feb - Mar - Apr - May - Jun - Jul - Aug - Sep - Oct - Nov - Dec Month Average °C Rain mm Jan 24 26 Feb 26 28 Mar 28 73 Apr 28 104 May 27 246 Jun 26 305 Jul 26 317 Aug 26 284 Sep 26 369 Oct 26 238 Nov 25 53 Dec 23 9 Source: [NASA POWER climatology, retrieved 2026-10-29](https://power.larc.nasa.gov/). ## Hospitals, banks and other services in Khao Chamao Places mapped inside Khao Chamao in open map data, by type — each number opens the full list with locations. - Hospitals9 - Banks1 - Petrol pumps2 - Hotels7 - Shopping malls1 - Schools6 - Restaurants23 - 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 Khao Chamao?In Rayong Province, Thailand - What is the population of Khao Chamao?25,416 (2023 estimate) - What is the median age in Khao Chamao?About 40 years (2023 estimate) - What is the population density of Khao Chamao?About 53 people per km² - What borders Khao Chamao?Bo Thong, Kaeng Hang Maeo, Klaeng and Wang Chan - How many villages are in Khao Chamao?41 named settlements (GeoNames, OpenStreetMap) - What is the elevation of Khao Chamao?Settlements lie between 21 m and 139 m - How many reservoirs and tanks are in Khao Chamao?6 named in GeoNames - What is the highest point in Khao Chamao?Khao Hoi Hua (406 m, GeoNames elevation model) - What is the best time to visit Khao Chamao?November to March - How many hospitals are in Khao Chamao?9 mapped - How many banks are in Khao Chamao?1 mapped - How many petrol pumps are in Khao Chamao?2 mapped - What is the P-code of Khao Chamao?TH2107 (OCHA common operational dataset)