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Amphoe San Sai

San Sai
สันทราย
Amphoe
Amphoe location in Chiang Mai Province
Amphoe location in Chiang Mai Province
Coordinates: 18°50′55″N 99°2′42″E / 18.84861°N 99.04500°E / 18.84861; 99.04500Coordinates: 18°50′55″N 99°2′42″E / 18.84861°N 99.04500°E / 18.84861; 99.04500
Country  Thailand
Province Chiang Mai
Area
 • Total 285.02 km2 (110.05 sq mi)
Population (2005)
 • Total 105,771
 • Density 371.1/km2 (961/sq mi)
Time zone ICT (UTC+7)
Postal code 50210
Geocode 5014

San Sai (Thai: สันทราย) is a district (amphoe) in the central part of Chiang Mai Province in northern Thailand.

During the annual rainy season (monsoons), the Ping and the Khao River carry large of deposits of sedimentary sand accumulating at the confluence of the two rivers from year to year, causing the sand to form large dunes. This area is now the location of the San Sai district office. When the Siamese government of created this district on 20 October 1897, they named it San Sai. "San" is the Thai word for "dune", and "sai" means "sand".

Neighboring districts are (from the north clockwise) Mae Taeng, Doi Saket, San Kamphaeng, Mueang Chiang Mai and Mae Rim and of Chiang Mai Province.

The district is subdivided into 12 subdistricts (tambon), which are further subdivided into 116 villages (muban). There are two townships (thesaban tambon) - San Sai Luang covers parts of tambon San Sai Luang, San Sai Noi, San Phranet and Pa Phai; and Mae Cho parts of tambon Nong Chom, Nong Han and Pa Phai. There are further 10 Tambon administrative organizations (TAO).


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