# Phon Sai, Roi Et Province – Subdistricts, Population & Map

> Source: https://wherepedia.org/thailand/roi-et/phon-sai/

District · Roi Et Province 

# Phon Sai

Phon Sai is a district (amphoe) of Thailand in Roi Et Province. It had an estimated **15,438 people** in 2023 on 231 km² (about 67 per km²). Its main town is Phon Sai. It is divided into 5 subdistricts. 62 named villages and localities are recorded here, and 74 mapped services such as hospitals, banks and schools.

- 15,438people (2023)
- 231km²
- 5subdistricts
- 74mapped services

## How many people live in Phon Sai?

Phon Sai had an estimated **15,438 people** in 2023 — 2.0% of Roi Et Province, 840th of 928 districts. There are 1,083 women for every 1,000 men (above the Roi Et Province figure of 1,067). Spread over 231 km², that is about **67 people per km²**, 627th of 928 districts.

22.9% of people are children under 15 and 17.0% are 65 or older; the median age is about 46 years (it is 45 across Roi Et Province). For every 100 people of working age (15–64) there are 67 children and older people.

0–4 ****1,109**

5–9 ****1,165**

10–14 ****1,268**

15–19 ****735**

20–24 ****392**

25–29 ****455**

30–34 ****634**

35–39 ****794**

40–44 ****1,042**

45–49 ****1,111**

50–54 ****1,261**

55–59 ****1,419**

60–64 ****1,422**

65–69 ****1,004**

70–74 ****661**

75–79 ****474**

80+ ****492**

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 Phon Sai?

Phon Sai lies in [Roi Et Province](https://wherepedia.org/thailand/roi-et/), [Thailand](https://wherepedia.org/thailand/). It borders 5 other districts: [Nong Hi](https://wherepedia.org/thailand/roi-et/nong-hi/), [Rasi Salai](https://wherepedia.org/thailand/si-sa-ket/rasi-salai/), [Rattanaburi](https://wherepedia.org/thailand/surin/rattanaburi/), [Sila Lat](https://wherepedia.org/thailand/si-sa-ket/sila-lat/) and [Suwannaphum](https://wherepedia.org/thailand/roi-et/suwannaphum/). By area it is the 700th largest of 928 districts in Thailand. It covers 3.0% of [Roi Et Province](https://wherepedia.org/thailand/roi-et/). The centre of Phon Sai is about 417 km in a straight line from Bangkok, the capital. It is about 71 km from Roi Et, the main town of Roi Et Province. The centre point is at 15.4819° N, 103.9411° E. Local names: โพนทราย .

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 Phon Sai

Subdistrict Area km² Localities Services 

[Phon Sai](https://wherepedia.org/thailand/roi-et/phon-sai/phon-sai/) 49 12 37 

[Sam Kha](https://wherepedia.org/thailand/roi-et/phon-sai/sam-kha/) 32 9 7 

[Si Sawang](https://wherepedia.org/thailand/roi-et/phon-sai/si-sawang/) 71 17 14 

[Tha Hat Yao](https://wherepedia.org/thailand/roi-et/phon-sai/tha-hat-yao/) 47 11 9 

[Yang Kham](https://wherepedia.org/thailand/roi-et/phon-sai/yang-kham/) 32 14 7 

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 Phon Sai

Open gazetteers list **62 villages, towns and localities** in Phon Sai. Settlements here lie between about 110 m and 135 m above sea level (median 127 m).

- Ban Bo Kaeo
- Ban Don Chik
- Ban Don Hua Chang
- Ban Don Kam
- Ban Don Kham
- Ban Don Mong
- Ban Don Muai
- Ban Don Rai
- Ban Don Samphan
- Ban Don Samran
- Ban Dong Mak Fai
- Ban Duan Samran
- Ban Hua Dong
- Ban Khi Lek
- Ban Ko Kaeo
- Ban Ku Kan Ta Nam
- Ban Ku Khan Thanam
- Ban Laem Sai Thong
- Ban Lao Kao
- Ban Lao Khao
- Ban Mak Yang
- Ban Muang Noi
- Ban Noi Phatthana
- Ban Non Charoen
- Ban Non Mueat Ae
- Ban Non Phayom
- Ban Non Sao E
- Ban Non Sung
- Ban Nong Bua Ban
- Ban Nong Bua Don Ton
- Ban Nong Bua Luang Phatthana
- Ban Nong Fang Daeng
- Ban Nong Kaeo Krading Thong
- Ban Nong Lek
- Ban Nong Phlap
- Ban Nong Phlap Mai
- Ban Nong Plap
- Ban Nong Sa-at
- Ban Nong Sam
- Ban Nong Suang
- Ban Nong Thum
- Ban Nong Yang
- Ban Phon Duan
- Ban Phon Na Ngam
- Ban Phon Sai
- Ban Phon Thong
- Ban Pla Khun
- Ban Pon Duan
- Ban Pon Tong
- Ban Sabaeng Tak
- Ban Sai Ngoen
- Ban Sam Ka
- Ban Sam Kha
- Ban Samrong
- Ban Sawang
- Ban Si Phon Thong
- Ban Suk Kasem
- Ban Tha Ngam
- Ban Thung Sakae
- Ban Yang Kam
- Ban Yang Kham
- Phon Sai

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 Phon Sai

Named natural and historic features inside Phon Sai, from the GeoNames gazetteer.

### Water

5 rivers and streams; 3 reservoirs and tanks.

- Ang Kep Nam Kut Hang
- Ang Kep Nam Nong I Don
- Ang Kep Nam Nong Thum
- Huai Nam Thaeng
- Huai Noi
- Rong Khai Nok
- Rong Nam Baeng
- Rong Thanon

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 Phon Sai and the best time to visit

In Phon Sai, the warmest month is Apr (average 31 °C) and the coolest is Dec (24 °C). About 1,413 mm of rain falls in a year; the wettest month is Sep (276 mm) and the driest Dec (3 mm). The most comfortable months for a visit are **October to February**.

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

Month Average °C Rain mm 

Jan 25 8 

Feb 28 11 

Mar 30 43 

Apr 31 75 

May 29 177 

Jun 28 180 

Jul 27 241 

Aug 26 270 

Sep 26 276 

Oct 26 111 

Nov 25 19 

Dec 24 3 

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

## Hospitals, banks and other services in Phon Sai

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

- Hospitals21
- Banks1
- Petrol pumps1
- Hotels3
- Schools21
- Colleges and universities2
- Pharmacies1
- Restaurants23
- Police stations1

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 Phon Sai?In Roi Et Province, Thailand
- What is the population of Phon Sai?15,438 (2023 estimate)
- What is the median age in Phon Sai?About 46 years (2023 estimate)
- What is the population density of Phon Sai?About 67 people per km²
- What borders Phon Sai?Nong Hi, Rasi Salai, Rattanaburi, Sila Lat and Suwannaphum
- How many villages are in Phon Sai?62 named settlements (GeoNames, OpenStreetMap)
- What is the elevation of Phon Sai?Settlements lie between 110 m and 135 m
- How many reservoirs and tanks are in Phon Sai?3 named in GeoNames
- What is the best time to visit Phon Sai?October to February
- How many hospitals are in Phon Sai?21 mapped
- How many banks are in Phon Sai?1 mapped
- How many petrol pumps are in Phon Sai?1 mapped
- What is the P-code of Phon Sai?TH4513 (OCHA common operational dataset)