- Country: Laos
- Population: 12,500
- Latitude: 20° 16.59' N (20.27652°)
- Longitude: 100° 24.78' E (100.41302°)
- Elevation: 387 m/1,270 ft. above sea level
- Time zone: Asia/Vientiane (UTC +07:00); DST not observed
- Alternate names: Ban Houayxai, Ban Houei Sai, Ban Huei Sai, Ban Hueu Sai, Ban Hwei Sai, Fort Carnot, Houayxay, Houei Sai, Hovei Sai, Huoei Sai, Van Houei Sai, Хуайсай
- Alternate names: Ban Houayxai, Ban Houayxay, Ban Houei Sai, Ban Huei Sai, Ban Hueu Sai, Ban Hwei Sai, Fort Carnot, Houayxay, Houei Sai, Hovei Sai, Huoei Sai, Khuajsaj, Van Houei Sai, Хуайсай
Data by Geonames.org, CC-BY