Wiang Kaen District

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Wiang Kaen
Amphoe location in Chiang Rai Province
Amphoe location in Chiang Rai Province
Coordinates: 20°6′44″N 100°30′49″E / 20.11222°N 100.51361°E / 20.11222; 100.51361Coordinates: 20°6′44″N 100°30′49″E / 20.11222°N 100.51361°E / 20.11222; 100.51361
Country  Thailand
Province Chiang Rai
Seat Muang Yai
 • Total 526.0 km2 (203.1 sq mi)
Population (2005)
 • Total 32,310
 • Density 61.4/km2 (159/sq mi)
Time zone ICT (UTC+7)
Postal code 57310
Geocode 5713

Wiang Kaen (Thai: เวียงแก่น; IPA: [wīaŋ kɛ̀n]) is the easternmost district (amphoe) of Chiang Rai Province, northern Thailand.


Historically, the area was Mueang Wiang Kaen, on the Ngao river bank. It was founded in the same time of Sukhothai kingdom and Chiang Rai.

The government separated the three tambon Muang Yai, Po and Lai Ngao from Chiang Khong district to create a minor district (king amphoe) on 1 April 1987.[1] It was upgraded to a full district on 7 September 1995.[2]


Neighboring districts are (from the south clockwise) Thoeng, Khun Tan, Chiang Khong of Chiang Rai Province. To the east lies Bokeo Province province of Laos.

1,442 m high Phu Chi Fa lies at the border with Thoeng District.[3]

The Phi Pan Nam Range mountain range in Wiang Kaen District


The district is divided into four sub-districts (tambon), which are further subdivided into 41 villages (muban). There are no municipal (thesaban) areas, and four tambon administrative organizations (TAO).

No. Name Thai name Villages Pop.
1. Muang Yai ม่วงยาย 9 7,449
2. Po ปอ 20 15,946
3. Lai Ngao หล่ายงาว 6 3,490
4. Tha Kham ท่าข้าม 6 5,425


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