Nakhon Nayok Province

Nakhon Nayok (Thai: นครนายก, pronounced [ná(ʔ).kʰɔ̄ːn nāː.jók]) is one of the central provinces (changwat) of Thailand, established by the Act Establishing Changwat Samut Prakan, Changwat Nonthaburi, Changwat Samut Sakhon, and Changwat Nakhon Nayok, Buddhist Era 2489 (1946), which came into force on 9 May 1946.

Nakhon Nayok

Wat Udom Thani วัดอุดมธานี นครนายก 04.jpg
Wat Luang Pho Pak Daeng วัดพราหมณี หลวงพ่อปากแดง นครนายก 04.jpg
Wat Chulabhorn Wanaram วัดจุฬาภรณ์วนาราม นครนายก 01.jpg
หอพระ มศว องครักษ์.jpg
Khun Dan Prakarn Chon dam, up water side.JPG
(clockwise from upper-left): Wat Udom Thani, Luang Pho Pak Daeng Buddha at Wat Phrammani, Bamboo Forest of Wat Chulaphonwanaram, Buddharupa Shrine of Srinakharinwirot University’s Ongkharak Campus, Khun Dan Prakan Chon Dam
Flag of Nakhon Nayok
Official seal of Nakhon Nayok
Nakhon Nayok, city of dream just by the capital, beautiful mountains, gorgeous falls, rich in nature, pollution-free
Map of Thailand highlighting Nakhon Nayok Province
Map of Thailand highlighting Nakhon Nayok Province
CapitalNakhon Nayok City
 • GovernorPradit Yamanan (since October 2016)
 • Total2,122 km2 (819 sq mi)
Area rankRanked 67th
 • Total260,093
 • RankRanked 73rd
 • Density123/km2 (320/sq mi)
 • Density rankRanked 39th
Human Achievement Index
 • HAI (2017)0.5886 "average"
Ranked 36th
Time zoneUTC+7 (ICT)
Postal code
Calling code037
ISO 3166 codeTH-26

Neighboring provinces are (from north clockwise) Saraburi, Nakhon Ratchasima, Prachinburi, Chachoengsao, and Pathum Thani. Nakhon Nayok is known for its waterfalls and fruit varieties.[citation needed]


The word nakhon originates from the Sanskrit word nagara (Devanagari: नगर) meaning 'city', and the word nayok is thought to have been derived from the Sanskrit nāyaka (Devanagari: नायक) meaning 'leader' or 'captain'. However, in this connection, na means '[tax of] rice field' and yok means 'exempted'. Hence the name of the province literally means 'tax-free city'.[4]


The city of Nakhon Nayok dates back to the Dvaravati Kingdom, probably founded in the 11th century. Ruins from this time are visible at Mueang Boran Dong Lakhon south of the modern city. Originally named Mueang Lablae, the name "Nakhon Nayok" was assigned to it in 1350, when it became a garrison town of the Ayutthaya kingdom protecting the eastern boundary. On 1 January 1943 the government downgraded Nakhon Nayok Province and combined it with Prachinburi Province, except for Ban Na District which became part of Saraburi Province.[5] On 9 May 1946 the province was re-established.[6]


The provincial seal shows an elephant holding an ear of rice with its trunk. This symbolizes fertile rice fields, as well as the forests with numerous elephants. In the background two piles of straw, trees, and clouds symbolizing the natural beauty of the province. The provincial flower and tree is the silk cotton tree (Cochlospermum religiosum).


Nang Rong Waterfall, a natural attraction in Nakhon Nayok

The northern part of the province is in the Sankamphaeng Range, the southern prolongation of the Dong Phaya Yen mountains, with the highest elevation the 1,292 meter high Yod Khao Kiew. Most of that area is covered by the Khao Yai National Park. The central part of the province however is a rather flat river plain formed by the Nakhon Nayok River. The southern part of the province has relatively infertile acidic soil.

The main river of the province is the Nakhon Nayok River. It joins the Prachinburi River at Pak Nam Yothaka in Ban Sang District, Prachinburi Province, which then becomes the Bang Pa Kong River.


Nakhon Nayok province has a tropical savanna climate (Köppen climate classification category Aw). Winters are dry and warm. Temperatures rise until May. Mansoon season runs from May through October, with heavy rain and somewhat cooler temperatures during the day, although nights remain warm. Climate statistics: maximum temperature is 42.2 °C (108 °F) in April and lowest temperature is 12.2 °C (54 °F) in December. Highest average temperature is 36.8 °C (98.2 °F) in April and minimum average temperature is 20.5 °C (68.9 °F) in December. Average annual rainfall is 1,823 millimeters in 134 days. Maximum daily rainfall is 195 millimeters in August.[7]

Administrative divisionsEdit

Four districts of Nakhon Nayok

The province is divided into four districts (amphoes). The districts are further subdivided into 41 sub-districts (tambons) and 403 villages (mubans).

  1. Mueang Nakhon Nayok
  2. Pak Phli
  3. Ban Na
  4. Ongkharak

Human achievement index 2017Edit

Index for the province Nakhon Nayok[3]
HAI indices Map Index Rank list
Health 2 0.3860 74th
Education 3 0.5316 20th
Employment 4 0.6687 23rd
Income 5 0.5551 30th
Housing and environment 6 0.9251 22nd
Family and community life 7 0.4154 73rd
Transport and communication 8 0.6570 15th
Participation 9 0.5700 36th
HAI 2017 1 0.5886 36th

Since 2003, United Nations Development Programme (UNDP) in Thailand has tracked progress on human development at sub-national level using the Human achievement index (HAI), a composite index covering all the eight key areas of human development. National Economic and Social Development Board (NESDB) has taken over this task since 2017.[3]
Province Nakhon Nayok, with an HAI 2017 value of 0.5886, takes the 36th place in the rankings. This is "average" between the values of 0.5792 and 0.5949.


Reports (data) from Thai government are "not copyrightable" (Public Domain), Copyright Act 2537 (1994), section 7.


  1. ^ Advancing Human Development through the ASEAN Community, Thailand Human Development Report 2014, table 0:Basic Data (PDF) (Report). United Nations Development Programme (UNDP) Thailand. pp. 134–135. ISBN 978-974-680-368-7. Retrieved 17 January 2016, Data has been supplied by Land Development Department, Ministry of Agriculture and Cooperatives, at Wayback Machine.
  2. ^ "ร่ยงานสถิติจำนวนประชากรและบ้านประจำปี พ.ศ.2561" [Statistics, population and house statistics for the year 2018]. Registration Office Department of the Interior, Ministry of the Interior. (in Thai). 31 December 2018. Retrieved 20 June 2019.
  3. ^ a b c ดัชนีความก้าวหน้าของคน ปี2560 [Human Achievement Index - HAI year 2017] (PDF). (Report) (in Thai). National Economic and Social Development Board (NESDB). 2017. pp. 69–70. ISBN 978-974-9769-33-1. Retrieved 14 September 2019, Maps 1-9
  4. ^ ประวัติจังหวัดนครนายก (in Thai). จังหวัดนครนายก. Archived from the original on 2009-02-09. Retrieved 2008-03-07.
  5. ^ พระราชบัญญัติยุบและรวมการปกครองบางจังหวัด พุทธศักราช ๒๔๘๕ [Dissolution and Consolidation Act in some Provinces, Buddhist Era 2485 (1942)] (PDF). Royal Thai Government Gazette. 59 (77): 2447–2449. 10 December 1942. Retrieved 2 December 2019.
  6. ^ พระราชบัญญัติจัดตั้งจังหวัดสมุทรปราการ จังหวัดนนทบุรี จังหวัดสมุทรสาคร และจังหวัดนครนายก พุทธศักราช ๒๔๘๙ [Act Establishing Changwat Samut Prakan, Changwat Nonthaburi, Changwat Samut Sakhon and Changwat Nakhon Nayok, Buddhist Era 2489 (1946)] (PDF). Royal Thai Government Gazette. 63 (29 Kor): 315–317. 9 May 1946. Retrieved 2 December 2019.
  7. ^ "Climatological Data for the Period 1981-2010". Thai Meteorological Department. 2011. pp. 17–18. Retrieved 2 December 2019, Weather station Prachinburi at 29 km distance

External linksEdit

Coordinates: 14°12′44″N 101°12′06″E / 14.21222°N 101.20167°E / 14.21222; 101.20167