|• Total||2,752 km2 (1,063 sq mi)|
|• Density||882/km2 (2,280/sq mi)|
|• Official||Hindi, Urdu|
|Time zone||IST (UTC+5:30)|
|Vehicle registration||UP 55|
|Literacy||67.81 per cent%|
|Lok Sabha constituency||Domariyaganj|
|Vidhan Sabha constituency||5|
Siddharthnagar district (Hindi: सिद्धार्थनगर ज़िला, Urdu: سدھارتھ نگر ضلع) is one of the 75 districts of Uttar Pradesh state in Northern India. Naugarh town is the district headquarters. Siddharth Nagar district is a part of Basti division. The district is known for the ruins of the Shakya Janapada, at Piprahwa. 22 km from the district headquarters Navgarh. According to Government of India, the district Siddharthnagar is one of the minority concentrated districts in India on the basis of the 2001 census data on population, socio-economic indicators and basic amenities indicators. Some notable politicians of this district are the great socialist leader and vice president of SP Lt.Sri.Brij Bhushan Tiwari, Lt. Minister Dinesh Singh, Jagdambika Pal, Mata Prasad Pandey, Kaamal Yusuf Malik,Hameed Hasan, And some young politicians Minhaj Anwar,Malik Faizan Ahmad,Malik Tahir Qamar,Fahad Hasan[Journalist ],Afeef Haider,etc.
The district was named after prince Siddhartha, the pre-enlightenment name of Buddha, as he spent his early years (till the age of 29 years) in Kapilavastu, parts of which included territory in this district.
Siddharthnagar district was carved out on 29 December 1988 by bifurcating Basti district. The new district comprised the Northern part of the erstwhile Basti district.
Today's Piprahwa (22 km from Siddharthnagar) is identified with ancient Kapilvastu where Lord Buddha spent the early years of his life. Kapilvastu was the capital of the Shakya clan whose ruler was the father of Lord Buddha, and therefore Lord Buddha is also called as Shakyamuni. The Sakya domain was one of the sixteen independent principalities of the 6th century BC.
Prince Gautam, as the Buddha was then known, left his palace in Kapilvastu at the age of 29, and revisited in 12 years later, after attaining enlightenment.
Today, Kapilvastu comprises several villages, mainly Piprahwa and Ganvaria. A large Stupa stands at the ancient site which is said to have housed the bone relics of Lord Buddha. The presence of these relics is testified by an ancient Brahmi inscription found at Piprahwa. The ruins of the royal palace are spread over a large area. Excavations by archaeological survey of India have revealed the relation of this place to the Kushan period. An excavated stupa bears text that proves the existence of an ancient monastery named Devaputra in this place. Two mounds have also been excavated at only a little distance (1.5 km) from this village which, is considered to be the ruins of King Suddhodhana's palace.
Notable individuals of the region Ahmad Hussain[Akrahra],include Baadshah Mehdi Hasan Khan (Khajuria), freedom fighter Qazi Adeel abbasi, Qazi Iftekhar Ahmad, Late Haji Noorul Haque (Naugarh Bazar) and Maulana Abdul Qayyum Rahmani. Saddened by communal riots and massacre during partition of India, Maulana Abdul Qayyum Rahmani, an eminent leader of Congress, abandoned politics and settled down in his native place village of Dudwania to spent his remaining life.
Siddharthnagar district lies between 27°N to 27°28'N and 82°45'E to 83°10'E. It is part of Purvanchal. The district borders Nepal's districts Kapilvastu on the north and Rupandehi on the northeast. Otherwise it is surrounded by other districts of Uttar Pradesh: Maharajganj on the east, Basti and Sant Kabir Nagar on the south, and Balrampur on the west. Siddarthnagar's area is 2,752 km2.
In 2006 the Ministry of Panchayati Raj named Siddharthnagar one of the country's 250 most backward districts (out of a total of 640). It is one of the 34 districts in Uttar Pradesh currently receiving funds from the Backward Regions Grant Fund Programme (BRGF).
Siddharthnagar district comprises 5 tehsils;
5 Vidhan Sabha constituencies are located within this district. These are Shohratgarh, Kapilvastu, Bansi, Itwa and Domariyaganj. The only Lok Sabha constituency in this district is the Domariyaganj.
According to the 2011 census Siddharthnagar district has a population of 2,553,526,  roughly equal to the nation of Kuwait or the US state of Nevada. This gives it a ranking of 164th in India (out of a total of 640). The district has a population density of 882 inhabitants per square kilometre (2,280 /sq mi) . Its population growth rate over the decade 2001-2011 was 25.17%. Siddharth Nagar has a sex ratio of 970 females for every 1000 males, and a literacy rate of 67.81%.
Minority population is about 27% of the total population of the district. Siddharth Nagar is a category "A" district, that is having socio-economic and basic amenities parameters below the national average.
This district produce many political personalities in State Government. Freedom fighter and former state minister Qazi Jaleel Abbasi belongs to Bayara Village of Siddhartha Nagar. Freedom fighter and ex-MLA Mathura Prasad Pandey was a prominent politician of this region, Lt. Minister Dinesh Singh was the one who played important role in making the government of Samajwadi Party in 2003. Currently Shri Mata Prasad Pandey is the prominent political face from Siddharthanagar District. He is currently Speaker of Uttar Pradesh Legislative Assembly. Jagdambika Pal(who was among the most renowned person in Indian National Congress and has recently joined the Bharatiya Janata Party) also contests in election from Dumariyaganj(Parliamentary seat in Siddharthanagar District).Ex- minister Abhimanyu Prasad Pandey, Taufeeq Ahmad, Mohammed Muqeem and Kamal Yusuf Malik (ex. state minister in State Government),Swayamber Chaudhary (ex-MLA BJP), Maulana Hamidullah Chaudhary (President NCP Siddharth Nagar),Ram Kripal Chaudhary (son of Swayamber Chaudhary and ex-zila panchayat member) also belong to this district. The great socialist leader, Samajwadi Party's 5 times MP and Vice President of Samajwadi Party Late Sri.Brij Bhushan Tiwari was the prominent and biggest face in politics who also belongs to Jamuni, a small village of Soharathgarh tehsil of this district.
- Ministry of Panchayati Raj (8 September 2009). "A Note on the Backward Regions Grant Fund Programme". National Institute of Rural Development. Retrieved 27 September 2011.
- "District Census 2011". Census2011.co.in. 2011. Retrieved 2011-09-30.
- US Directorate of Intelligence. "Country Comparison:Population". Retrieved 2011-10-01. "Kuwait 2,595,62"
- "2010 Resident Population Data". U. S. Census Bureau. Retrieved 2011-09-30. "Nevada 2,700,551"
- MINUTES OF THE 34th MEETING OF EMPOWERED COMMITTEE TO CONSIDER AND APPROVE REVISED PLAN FOR BALANCE FUND FOR THE DISTRICTS OF GHAZIABAD, BAREILLY, BARABANKI, SIDDHARTH NAGAR, SHAHJANPUR, MORADABAD, MUZAFFAR NAGAR, BAHRAICH AND LUCKNOW (UTTAR PRADESH) UNDER MULTI-SECTORAL DEVELOPMENT PROGRAMME IN MINORITY CONCENTRATION DISTRICTS HELD ON 22nd JULY, 2010 AT 11.00 A.M. UNDER THE CHAIRMANSHIP OF SECRETARY, MINISTRY OF MINORITY AFFAIRS. F. No. 3/64/2010-PP-I, GOVERNMENT OF INDIA, MINISTRY OF MINORITY AFFAIRS
||Western Development Region, Nepal|
|Balrampur district||Maharajganj district|
|Gonda district||Basti district||Gorakhpur district
Sant Kabir Nagar district