# Khian Sa, Surat Thani Province – Subdistricts & Population

> Source: https://wherepedia.org/thailand/surat-thani/khian-sa/

District · Surat Thani Province 

# Khian Sa

Khian Sa is a district (amphoe) of Thailand in Surat Thani Province. It had an estimated **52,900 people** in 2023 on 678 km² (about 78 per km²). Its main town is Khian Sa. It is divided into 5 subdistricts. 85 named villages and localities are recorded here, and 114 mapped services such as hospitals, banks and schools.

- 52,900people (2023)
- 678km²
- 5subdistricts
- 114mapped services

## How many people live in Khian Sa?

Khian Sa had an estimated **52,900 people** in 2023 — 5.1% of Surat Thani Province, 343rd of 928 districts. There are 1,000 women for every 1,000 men (below the Surat Thani Province figure of 1,035). Spread over 678 km², that is about **78 people per km²**, 533rd of 928 districts.

21.1% of people are children under 15 and 10.4% are 65 or older; the median age is about 35 years (it is 39 across Surat Thani Province). For every 100 people of working age (15–64) there are 46 children and older people.

0–4 ****3,763**

5–9 ****3,751**

10–14 ****3,639**

15–19 ****3,554**

20–24 ****3,595**

25–29 ****4,047**

30–34 ****3,792**

35–39 ****3,795**

40–44 ****4,385**

45–49 ****4,215**

50–54 ****3,502**

55–59 ****2,906**

60–64 ****2,444**

65–69 ****2,006**

70–74 ****1,443**

75–79 ****982**

80+ ****1,081**

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 Khian Sa?

Khian Sa lies in [Surat Thani Province](https://wherepedia.org/thailand/surat-thani/), [Thailand](https://wherepedia.org/thailand/). It borders 7 other districts: [Ban Na Doem](https://wherepedia.org/thailand/surat-thani/ban-na-doem/), [Ban Na San](https://wherepedia.org/thailand/surat-thani/ban-na-san/), [Khiri Rat Nikhom](https://wherepedia.org/thailand/surat-thani/khiri-rat-nikhom/), [Phanom](https://wherepedia.org/thailand/surat-thani/phanom/), [Phrasaeng](https://wherepedia.org/thailand/surat-thani/phrasaeng/), [Phunphin](https://wherepedia.org/thailand/surat-thani/phunphin/) and [Wiang Sa](https://wherepedia.org/thailand/surat-thani/wiang-sa/). By area it is the 271st largest of 928 districts in Thailand. It covers 5.2% of [Surat Thani Province](https://wherepedia.org/thailand/surat-thani/). The centre of Khian Sa is about 577 km in a straight line from Bangkok, the capital. It is about 51 km from Surat Thani, the main town of Surat Thani Province. The centre point is at 8.7605° N, 99.0748° E. Local names: เคียนซา .

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 Khian Sa

Subdistrict Area km² Localities Services 

[Aranyakham Wari](https://wherepedia.org/thailand/surat-thani/khian-sa/aranyakham-wari/) 111 15 8 

[Ban Sadet](https://wherepedia.org/thailand/surat-thani/khian-sa/ban-sadet/) 262 31 37 

[Khao Tok](https://wherepedia.org/thailand/surat-thani/khian-sa/khao-tok/) 26 4 5 

[Khian Sa](https://wherepedia.org/thailand/surat-thani/khian-sa/khian-sa/) 101 16 38 

[Phuang Phromkhon](https://wherepedia.org/thailand/surat-thani/khian-sa/phuang-phromkhon/) 177 23 26 

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 Khian Sa

Open gazetteers list **85 villages, towns and localities** in Khian Sa. Settlements here lie between about 8 m and 169 m above sea level (median 43 m).

- Ban Amrat
- Ban Ao Ton Pho
- Ban Bang Di
- Ban Bang Pra
- Ban Bang Yai
- Ban Bo Than
- Ban Bok Hun
- Ban Chik Chai
- Ban Don Phayom
- Ban Don Sawan
- Ban Han Dam
- Ban Hu Nop
- Ban Hua Khao
- Ban Huai Haeng
- Ban Huai Lek Fai
- Ban Huai Mut
- Ban Huai Nam Tao
- Ban Huai Riang
- Ban Huai Sai Khao
- Ban Huai Saring
- Ban Huai Yot
- Ban Khao Din
- Ban Khao Hai
- Ban Khao Hua Kralok
- Ban Khao Na Nai
- Ban Khao Rak
- Ban Khao Sam Yot
- Ban Khao Tok
- Ban Khao Tok Tai
- Ban Khao Wang
- Ban Khlong Bang Pra
- Ban Khlong Khian
- Ban Khlong Pan
- Ban Khlong Ro
- Ban Khlong Sila
- Ban Khlong Yon
- Ban Khuan Chang Han
- Ban Khuan Charoen
- Ban Khuan Khiri Wong
- Ban Khuan Khong
- Ban Khuan Kling
- Ban Khuan Langsat
- Ban Khuan Mai Daeng
- Ban Khuan Pliak
- Ban Khuan Samakkhi
- Ban Khuan Suk
- Ban Khuan To
- Ban Ko Kaeo
- Ban Krasum
- Ban Mit Pracha Rat
- Ban Na Khao
- Ban Na Yao
- Ban Nai Na
- Ban Nai Prap
- Ban Nam Yak
- Ban Nong Bua
- Ban Nong Khla
- Ban Pa Phi
- Ban Pak Chong
- Ban Phrom Rang Sit
- Ban Phru Som
- Ban Phru Wai Nam
- Ban Phuang Phrom Nakhon
- Ban Plai Khlong
- Ban Plai Khuan
- Ban Plai Rik
- Ban Rai Yao
- Ban Raphi Phan
- Ban Rat Phatthana
- Ban Sai Wari
- Ban Santi Suk
- Ban Sombun Pracha San
- Ban Song Phi Nong
- Ban Tha Hin
- Ban Tham Phut
- Ban Than Ari
- Ban Thap Kao
- Ban Thap Mai
- Ban Thap Paet
- Ban Thap Si Thong
- Ban Thepha
- Ban Thung Kha
- Ban Ton Mut
- Ban Wang Phai
- Khian Sa

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 Khian Sa

Named natural and historic features inside Khian Sa, from the GeoNames gazetteer.

### Water

5 rivers and streams; 2 reservoirs and tanks.

- Ang Kep Nam Ban Khuan Kling
- Ang Kep Nam Na Khao
- Huai Bang Khian Sa
- Huai Khan Bet
- Khlong Bang Tok
- Khlong Ro
- Mae Nam Ta Pi

### Hills and mountains

7 hills.

- Khuan Din Daeng · 232 m
- Khao Tok · 205 m
- Khao Hua Kralok · 201 m
- Khao Hai · 190 m
- Khao Sin La · 141 m
- Khao Khiam · 123 m
- Khuan Mai Daeng · 74 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 Khian Sa and the best time to visit

In Khian Sa, the warmest month is Apr (average 28 °C) and the coolest is Jan (25 °C). About 2,329 mm of rain falls in a year; the wettest month is Nov (320 mm) and the driest Feb (31 mm). The most comfortable months for a visit are **February to March**.

- Jan
- Feb
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
- Dec

Month Average °C Rain mm 

Jan 25 123 

Feb 26 31 

Mar 27 110 

Apr 28 104 

May 28 217 

Jun 27 221 

Jul 26 223 

Aug 26 216 

Sep 26 264 

Oct 26 276 

Nov 26 320 

Dec 25 224 

Source: [NASA POWER climatology, retrieved 2026-10-29](https://power.larc.nasa.gov/).

## Hospitals, banks and other services in Khian Sa

Places mapped inside Khian Sa in open map data, by type — each number opens the full list with locations.

- Hospitals22
- Banks7
- ATMs1
- Petrol pumps7
- Hotels5
- Schools17
- Pharmacies3
- Restaurants48
- Police stations2
- Dental clinics2

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 Khian Sa?In Surat Thani Province, Thailand
- What is the population of Khian Sa?52,900 (2023 estimate)
- What is the median age in Khian Sa?About 35 years (2023 estimate)
- What is the population density of Khian Sa?About 78 people per km²
- What borders Khian Sa?Ban Na Doem, Ban Na San, Khiri Rat Nikhom, Phanom, Phrasaeng, Phunphin and Wiang Sa
- How many villages are in Khian Sa?85 named settlements (GeoNames, OpenStreetMap)
- What is the elevation of Khian Sa?Settlements lie between 8 m and 169 m
- How many reservoirs and tanks are in Khian Sa?2 named in GeoNames
- What is the highest point in Khian Sa?Khuan Din Daeng (232 m, GeoNames elevation model)
- What is the best time to visit Khian Sa?February to March
- How many hospitals are in Khian Sa?22 mapped
- How many banks are in Khian Sa?7 mapped
- How many ATMs are in Khian Sa?1 mapped
- How many petrol pumps are in Khian Sa?7 mapped
- What is the P-code of Khian Sa?TH8414 (OCHA common operational dataset)