Introduction
Siddharthanagar Municipality lies on the southern part of Rupandehi District of Lumbini Province which is also an administrative headquarter of Rupandehi District. In terms of geographical location, the municipality is located at 83º26 'east longitude and 27º31' north latitude. With the total area of 36.03 sq. Km. the municipality is located at an altitude of 110 meters above sea level and has a tropical climate.The Maximum temperature noted is 45.20 degree Celsius and minimum temperature reached 2.40 degree Celsius while average rainfall is 1436.5 mm. This Municipality has a Second International Airport of the Country named as “Gautam Buddha International Airport”.

Siddharthanagar Municipality is established as an important tourist, commercial and industrial center between the main entrances on the border of Nepal and India. The municipality is named after Siddhartha , the childhood name of Lord Gautam Buddha. This municipality is a common confluence of cultural traditions and beliefs, literature, language, art, religion and culture. Until 1990, the town was sparsely populated and after the construction of the airport in Shanti Nagar in 2010, the pace of settlement development has accelerated. In 2024 BS, This city was formally declared as municipality under the name of Bhairahawa Nagar Panchayat. The name of the municipality has been changed from Bhairahawa to Siddharthanagar since 2033 BS.Divided into 13 wards, the municipality is bounded on the east by Omsatiya and Rohini Rural Municipality, on the west by Mayadevi Rural Municipality, on the north by Omsatiya and Mayadevi Rural Municipality and on the south by Sunauli (Maharajgunj District, India).

Province : Lumbini
District : Rupandehi
Federal Constituency No. : 3
Province Constituency No. : 3 “Ka”
Total Ward : 13
Total Population : 76307
(Male: 38,136, Female: 38,171) (Census 2078 Initial Report)
Area : 36.03 Sq.K.M.
Population Composition : Brahmin, Chhetri, Muslim,Madhesi, Magar, Gurung,Newar etc.
Religion : Hinduism, Muslim, Buddhism etc.
Population Density : 2118 per sq. km.
Household : 12329 (Census 2078 Initial Report)
Family Member : 16,011 (Census 2078 Initial Report)
Boundaries : East : Omsatiya and Rohini Rural Municipality
West : Mayadevi Rural Municipality
North : Omsatiya and Mayadevi Rural Municipality
South : Sunauli (Maharajgunj District, India )
Rivers : Danda and Ghaghara River

• Community schools – 17
• Institutional schools -42
• Religious schools -13
• Sanskrit school- 1
• Learning center -1
 

Health Institution
1. Government Hospital (1)
• Bhim Hospital
2. Private Hospitals (4)
• Lumbini Ran Ambika Shah Eye Hospital
• Universal College of Medical Sciences Teaching Hospital
• Ojesh Hospital Pvt. Ltd.
• Aarogya Multi Specialist Health Care and Diagnostic
Center Pvt. Ltd.
3. Basic Health Care Centers (5)
• Basic Health Care Center Ward No. 1
• Basic Health Care Center Ward No. 3
• Basic Health Care Center Ward No. 9
• Basic Health Care Center Ward no. 10
• Basic Health Care Center Ward No. 11
4. Belahiya Health Desk Siddharthanagar No. 1 (1)