Plaeng Yao district

Plaeng Yao (แปลงยาว, ) is a district (amphoe) of Chachoengsao province, central Thailand.

History
The minor district (king amphoe) Plaeng Yao was established on 16 October 1978 with the three tambons: Plaeng Yao, Hua Samrong, and Wang Yen from Bang Khla district. It was upgraded to a full district on 15 March 1985.

Geography
Neighboring districts are (from the west clockwise): Ban Pho, Bang Khla, Ratchasan, Phanom Sarakham, and Sanam Chai Khet of Chachoengsao Province; and Ko Chan, Phanat Nikhom, and Phan Thong of Chonburi province.

Economy
Plaeng Yao is home to Toyota's Gateway Assembly Plant. It has been used to manufacture the Prius model.

Central administration
Plaeng Yao district is divided into four sub-districts (tambons), which are further subdivided into 48 administrative villages (mubans).

Local administration
There are four sub-district municipalities (thesaban tambons) in the district:
 * Thung Sadao (Thai: เทศบาลตำบลทุ่งสะเดา) consisting of parts of sub-districts Plaeng Yao and Wang Yen.
 * Plaeng Yao (Thai: เทศบาลตำบลแปลงยาว) consisting of parts of sub-districts Plaeng Yao and Wang Yen.
 * Hua Samrong (Thai: เทศบาลตำบลหัวสำโรง) consisting of parts of sub-district Hua Samrong.
 * Wang Yen (Thai: เทศบาลตำบลวังเย็น) consisting of parts of sub-district Wang Yen.

There are three sub-district administrative organizations (SAO) in the district:
 * Plaeng Yao (Thai: องค์การบริหารส่วนตำบลแปลงยาว) consisting of parts of sub-district Plaeng Yao.
 * Hua Samrong (Thai: องค์การบริหารส่วนตำบลหัวสำโรง) consisting of parts of sub-district Hua Samrong.
 * Nong Mai Kaen (Thai: องค์การบริหารส่วนตำบลหนองไม้แก่น) consisting of sub-district Nong Mai Kaen.