# Wiang Sa, Nan Province – Subdistricts, Population & Map

> Source: https://wherepedia.org/thailand/nan/wiang-sa/

District · Nan Province 

# Wiang Sa

Wiang Sa is a district (amphoe) of Thailand in Nan Province. It had an estimated **57,734 people** in 2023 on 2,092 km² (about 28 per km²). Its main town is Wiang Sa. It is divided into 17 subdistricts. 162 named villages and localities are recorded here, and 215 mapped services such as hospitals, banks and schools.

- 57,734people (2023)
- 2,092km²
- 17subdistricts
- 215mapped services

## How many people live in Wiang Sa?

Wiang Sa had an estimated **57,734 people** in 2023 — 15.2% of Nan Province, 314th of 928 districts. There are 1,023 women for every 1,000 men (above the Nan Province figure of 1,009). Spread over 2,092 km², that is about **28 people per km²**, 867th of 928 districts.

16.4% of people are children under 15 and 20.2% are 65 or older; the median age is about 49 years (it is 47 across Nan Province). For every 100 people of working age (15–64) there are 58 children and older people.

0–4 ****3,166**

5–9 ****2,891**

10–14 ****3,402**

15–19 ****2,781**

20–24 ****1,568**

25–29 ****1,787**

30–34 ****2,302**

35–39 ****2,863**

40–44 ****4,173**

45–49 ****5,230**

50–54 ****5,600**

55–59 ****5,646**

60–64 ****4,642**

65–69 ****4,131**

70–74 ****2,989**

75–79 ****2,216**

80+ ****2,347**

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 Wiang Sa?

Wiang Sa lies in [Nan Province](https://wherepedia.org/thailand/nan/), [Thailand](https://wherepedia.org/thailand/). It borders 7 other districts: [Ban Luang](https://wherepedia.org/thailand/nan/ban-luang/), [Mae Charim](https://wherepedia.org/thailand/nan/mae-charim/), [Mueang Nan](https://wherepedia.org/thailand/nan/mueang-nan/), [Na Noi](https://wherepedia.org/thailand/nan/na-noi/), [Phu Phiang](https://wherepedia.org/thailand/nan/phu-phiang/), [Rong Kwang](https://wherepedia.org/thailand/phrae/rong-kwang/) and [Song](https://wherepedia.org/thailand/phrae/song/). By area it is the 19th largest of 928 districts in Thailand. It covers 17.2% of [Nan Province](https://wherepedia.org/thailand/nan/). The centre of Wiang Sa is about 535 km in a straight line from Bangkok, the capital. It is about 26 km from Nan, the main town of Nan Province. The centre point is at 18.5604° N, 100.7067° E. Local names: เวียงสา .

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 Wiang Sa

Subdistrict Area km² Localities Services 

[Ai Na Lai](https://wherepedia.org/thailand/nan/wiang-sa/ai-na-lai/) 175 19 11 

[Chom Chan](https://wherepedia.org/thailand/nan/wiang-sa/chom-chan/) 67 6 3 

[Khueng](https://wherepedia.org/thailand/nan/wiang-sa/khueng/) 79 11 5 

[Klang Wiang](https://wherepedia.org/thailand/nan/wiang-sa/klang-wiang/) 31 18 105 

[Lai Nan](https://wherepedia.org/thailand/nan/wiang-sa/lai-nan/) 120 12 13 

[Mae Khaning](https://wherepedia.org/thailand/nan/wiang-sa/mae-khaning/) 147 9 1 

[Mae Sa](https://wherepedia.org/thailand/nan/wiang-sa/mae-sa/) 38 10 5 

[Mae Sakhon](https://wherepedia.org/thailand/nan/wiang-sa/mae-sakhon/) 108 7 3 

[Na Lueang](https://wherepedia.org/thailand/nan/wiang-sa/na-lueang/) 27 8 5 

[Nam Muap](https://wherepedia.org/thailand/nan/wiang-sa/nam-muap/) 351 14 12 

[Nam Pua](https://wherepedia.org/thailand/nan/wiang-sa/nam-pua/) 38 8 21 

[Pong Sanuk](https://wherepedia.org/thailand/nan/wiang-sa/pong-sanuk/) 79 8 3 

[San](https://wherepedia.org/thailand/nan/wiang-sa/san/) 135 12 11 

[Sanna Nong Mai](https://wherepedia.org/thailand/nan/wiang-sa/sanna-nong-mai/) 151 5 2 

[Tan Chum](https://wherepedia.org/thailand/nan/wiang-sa/tan-chum/) 31 11 7 

[Thung Si Thong](https://wherepedia.org/thailand/nan/wiang-sa/thung-si-thong/) 94 6 5 

[Yap Hua Na](https://wherepedia.org/thailand/nan/wiang-sa/yap-hua-na/) 422 11 3 

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 Wiang Sa

Open gazetteers list **162 villages, towns and localities** in Wiang Sa. Settlements here lie between about 182 m and 894 m above sea level (median 230 m).

- Amphoe Sa
- Ban Ai
- Ban Bo Hoi
- Ban Bun Nak
- Ban Bun Yuen
- Ban Chakhe Phu Hom
- Ban Choi
- Ban Chom Chan
- Ban Chomphu
- Ban Chuen
- Ban Chuen Mai
- Ban Din Khao
- Ban Don Chai
- Ban Don Fuang
- Ban Don Kaeo
- Ban Don Thaen
- Ban Fang Min
- Ban Hak Han
- Ban Hat Rai
- Ban Hat San
- Ban Hua Na
- Ban Huai
- Ban Huai Kaeo
- Ban Huai Khu
- Ban Huai Kom
- Ban Huai Laip
- Ban Huai Lot
- Ban Huai Men
- Ban Huai Nam Un
- Ban Huai Noi
- Ban Huai San Sai
- Ban Huai Son
- Ban Khaem
- Ban Khrok Kham
- Ban Khu
- Ban Khue Wiang
- Ban Khueng
- Ban Khueng Tai
- Ban Khung
- Ban Klang
- Ban Klang Wiang
- Ban Kon Fai
- Ban Kot
- Ban Kum
- Ban Lai Nan
- Ban Lao
- Ban Lap Muen Phruan
- Ban Lap Muen Tai
- Ban Lom Kao Pin
- Ban Ma
- Ban Mae Kap Fai
- Ban Mae Kha Ning Sakha Ban Huai Na Ngio
- Ban Mae Khaning
- Ban Mae Sakhon
- Ban Mai
- Ban Mai Charoen Rat
- Ban Mai Din Daen
- Ban Mai Santiphap
- Ban Muang Noeng
- Ban Muang Nong
- Ban Mueang Ram
- Ban Na Daien
- Ban Na Haen
- Ban Na Ka
- Ban Na Kham
- Ban Na Khian
- Ban Na Khian Nuea
- Ban Na Kok
- Ban Na Lai Nuea
- Ban Na Lai Tai
- Ban Na Lueang Huai Muang
- Ban Na Lueang Muang Khwa
- Ban Na Lueang Nai
- Ban Na Lueang Nok
- Ban Na Pang
- Ban Na Pha
- Ban Na Sa
- Ban Na San
- Ban Nam Khrok Mai
- Ban Nam Luk
- Ban Nam Muap
- Ban Nam Pai
- Ban Nam Phi
- Ban Nam Pu
- Ban Nam Pua
- Ban Nam Song
- Ban Ngio Ngam
- Ban Nong
- Ban Nong Hoi
- Ban Nong Nok
- Ban Oen
- Ban Pa Hung
- Ban Pa Kha
- Ban Pa Kluai
- Ban Pa Ngio
- Ban Pa Phae
- Ban Pa Sak
- Ban Pak Nam Haeng
- Ban Pak Ngu
- Ban Pakjat
- Ban Pang Mon
- Ban Pang Sa
- Ban Pha Chap
- Ban Pha Hang
- Ban Pha Pho Thong
- Ban Pha Wiang
- Ban Phai Ngam
- Ban Phayao
- Ban Phra Net
- Ban Phrai Udom
- Ban Phu Phiang
- Ban Pong Sanuk
- Ban Prong
- Ban Racha
- Ban Rang Mon
- Ban Rong Yen
- Ban Sai Thong
- Ban Sakhon
- Ban Sali
- Ban Saliam
- Ban Saliam Nuea
- Ban Salik
- Ban Samai
- Ban San
- Ban San Na Khian
- Ban San Na Nong Mai
- Ban San Rung Rueang
- Ban Santisuk
- Ban Sathan
- Ban Sathan Mai
- Ban Si Mongkhon
- Ban Si Mongkhon Nuea
- Ban Sop Khaeng
- Ban Sop Lot
- Ban Sop Wa
- Ban Ta Leo
- Ban Tan Chum Mu Chet
- Ban Tan Chum Mu Nueng
- Ban Tha Don Chai
- Ban Tha Kham
- Ban Tha Li
- Ban Tha Loe
- Ban Thaban
- Ban Than Thong
- Ban Thong Noi
- Ban Thung Charoen
- Ban Thung Phong
- Ban Thung Thong
- Ban Ton Nun
- Ban Ton Pong
- Ban Tuet
- Ban Wana Phrai
- Ban Wang Din Mai
- Ban Wang Khae
- Ban Wang Muang
- Ban Wang Tup
- Ban Wang Yao
- Ban Witthaya
- Ban Wua Daeng
- Ban Yap Hua Na
- Ban Yap Na Loem
- Wiang 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 Wiang Sa

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

### Water

39 rivers and streams; 14 reservoirs and tanks.

- Ang Kep Nam Ban San Na Nong Mai
- Ang Kep Nam Huai Chok
- Ang Kep Nam Huai Fa
- Ang Kep Nam Huai La Puap
- Ang Kep Nam Huai Lap Muen Phruan
- Ang Kep Nam Huai Phong Chang
- Ang Kep Nam Huai Po
- Ang Kep Nam Huai Sak
- Ang Kep Nam Na Kok
- Ang Kep Nam Nong Khiao
- Huai Fa
- Huai Ha
- Huai Haen
- Huai Haen Reservoir
- Huai Hua Na
- Huai Khu
- Huai Lap Muen
- Huai Loem
- Huai Mae Sa
- Huai Mae Sakhon
- Huai Mae Tha
- Huai Muang
- Huai Na Kham
- Huai Na Lueang

…and 29 more.

### Hills and mountains

59 mountains; 4 hills.

- Doi Phu Kheng · 1,342 m
- Doi Kham · 1,223 m
- Doi Khun Huai Huek · 1,204 m
- Doi Wai · 1,180 m
- Doi Pi · 1,111 m
- Doi Khun Huai Ya Thai · 1,108 m
- Doi Pae Mueang · 1,056 m
- Doi Pu Fa · 999 m
- Doi Pha Ruean · 987 m
- Doi Yai · 971 m
- Doi Pu Loem · 906 m
- Doi Sop Huai Khating · 898 m
- Doi Yai · 868 m
- Phu Nang Klam · 833 m
- Doi Pae Mueang · 814 m
- Doi Khun Nam Sa · 800 m
- Doi Dam · 785 m
- Doi Yi · 785 m
- Khun Mae Sa Ngaeng · 780 m
- Doi Hua Kong · 778 m
- Doi Nong Luang · 776 m
- Doi Pae · 768 m
- Khao Khrueng · 754 m
- Doi Thop Sok · 747 m

…and 39 more.

### Getting around

1 airfield.

- Sa

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 Wiang Sa and the best time to visit

In Wiang Sa, the warmest month is Apr (average 28 °C) and the coolest is Dec (20 °C). About 1,240 mm of rain falls in a year; the wettest month is Aug (258 mm) and the driest Feb (7 mm). The most comfortable months for a visit are **October to March**.

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

Month Average °C Rain mm 

Jan 20 16 

Feb 23 7 

Mar 26 32 

Apr 28 85 

May 27 178 

Jun 26 143 

Jul 26 205 

Aug 25 258 

Sep 26 204 

Oct 25 81 

Nov 23 20 

Dec 20 11 

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

## Hospitals, banks and other services in Wiang Sa

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

- Hospitals37
- Banks5
- Petrol pumps21
- Hotels29
- Shopping malls2
- Schools19
- Colleges and universities10
- Pharmacies2
- Restaurants84
- Police stations4
- 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 Wiang Sa?In Nan Province, Thailand
- What is the population of Wiang Sa?57,734 (2023 estimate)
- What is the median age in Wiang Sa?About 49 years (2023 estimate)
- What is the population density of Wiang Sa?About 28 people per km²
- What borders Wiang Sa?Ban Luang, Mae Charim, Mueang Nan, Na Noi, Phu Phiang, Rong Kwang and Song
- How many villages are in Wiang Sa?162 named settlements (GeoNames, OpenStreetMap)
- What is the elevation of Wiang Sa?Settlements lie between 182 m and 894 m
- How many reservoirs and tanks are in Wiang Sa?14 named in GeoNames
- What is the highest point in Wiang Sa?Doi Phu Kheng (1,342 m, GeoNames elevation model)
- What is the best time to visit Wiang Sa?October to March
- How many hospitals are in Wiang Sa?37 mapped
- How many banks are in Wiang Sa?5 mapped
- How many petrol pumps are in Wiang Sa?21 mapped
- What is the P-code of Wiang Sa?TH5507 (OCHA common operational dataset)