Rengkai is the most populated and one of the three census towns of Churachandpur District in the Indian state of Manipur.

Rengkai is divided into 18 localities constituting a group of houses. Some of these localities vary in size and population. The 18 divisions of Rengkai based on localities are:

A.G. Road	Bethlehem Veng	Bible Hill
Bridge Street	Cemetery Road	Edenthar
Muolhlum	Nehru Marg	Rengkai Road
Shan Veng	Shillong Hills	Tahiti Hill
Thailane Veng	Venglai	Vengpui
Vengthlang	Zion Veng	Zote Veng

It lies bounded by Simveng in the west, Muolvaiphei in the northeast, and New Lamka to the south, stretching along the Sugnu Road until it reaches the intersection with Teddim Road at Rengkai Road. Positioned 1 kilometer south of the district headquarters and 67 kilometers from the state capital Imphal, it covers an area of 7.5 square kilometers. The town is nestled alongside the Khuga River, characterized by a generally flat terrain with hills in the vicinity. Sitting at an elevation of 914 meters (2,999 feet) above sea level, the Muolhlum Hill stands as the principal elevation within the town. The topography gradually slopes downward towards Zote Veng in the eastern part of the town. The Lanva stream flows through the town, originating from Edenthar and converging with the Khuga River at the base of Zote Veng and Vengthlang.

The Khuga River or as locally known, Tuithapui, runs through the town.

Rengkai Village Authory (1956-2022)

Term	Chairman	Secretary	Members
1956-1960	Sailienlung	HB Duma	Ralleng, L. Taivel, Hleia, Vanrosang, J. Tusing
1961-1965	J.C. Chongkholien	Vanrosang	Ralleng, L. Taivel, Hrangkaphlei, Tluanga
1966-1970	J.C. Chongkholien	L. Taivel	Ralleng, Hrangkaphlei, Tluanga, Vanrosang
1971-1975	J.C. Chongkholien	H. Thuomte	Ralleng, L. Taivel, J. Tusing, Vanrosang
1976-1979	J.C. Chongkholien	H. Thuomte	L. Taivel, J. Tusing, Vanrosang, L. Neithang, Changa, Hrangkaphlei, S. Hnuna, Zothansei
1980-1991	J.C. Chongkholien	H. Thuomte	Zothansei, S. Hnuna, L. Taivel, Fima, J. Sanghlun, Hrangkaphlei, L. Sanglur, Thangsavung, Changa, Thangthuom, Thanglienthuom
1992-2007	J.C. Chongkholien	H. Thuomte, Thanglienthuom	Changa, Dr. HL Liensang, Joseph Lalrothang, HK Joute, LT Zuola, J. Lungawi, Phirthangsei Varte, Zothanglien, Lalhming Varte, Hmangkhum
2007-2012	J.C. Chongkholien	Thanglienthuom	Lal H Varte, Lienhmingthang, HK Joute, Joseph Lalrothang, Dr. HL Liensang, Zothanglur, Laltanlien Joute, Ramthanglien, Jousanghlei Joute, L. Ringum Joute
2012-2017	J.C. Chongkholien	Lienhmingthang	Dr. Thienkhogin, HK Joute, Thanglienthuom, Joseph Lalrothang, Upa Dr. HL Liensang, Zothanglur, L. Remvel, L. Hmingsang Joute, H. Zaneisang, Songneilien Songate
2017-2022	J.C. Chongkholien	L. Hmingsang Joute	Songneilien Songate, Dr. Ginte, HK Joute, Thanglienthuom, Joseph Lalrothang, Dr. HL Liensang, Zothanglur, L. Remvel, L. Rochung, H. Zaneisang,

Vishal Mega Mart is a hypermarket with more than 400 stores all over India. The Mega Mart in Rengkai is located adjacent to the Rengkai Bridge within Bridge Street locality.

• Rengkai Higher Secondary School
• The Pathway School
• Douglas Memorial High School

Rengkai being a Christian-dominant town, there is division based on the denomination of the Church. Classification of the Church is based on their beliefs. The different denominations present within the town are:

• Independent Church of India

The Independent Church of India, or the ICI, is an evangelical church, headquartered in Sielmat, Churachandpur, Manipur, with a mission to 'propagate the Gospel across the Indian sub-continent with a major emphasis on the North Eastern states of India'. It was founded by Watkin Roberts, a Welsh missionary on 5 February 1910 at Senvon village in the southern part of Manipur state, India and is an indigenous, self-supporting, self-propagating and self-governing evangelical church.

The ICI church in Rengkai promulgated at the time of the village's inception, where its initial church members consisted of 10 households with a total strength of 63. The church has now grown to more than 2000 members.

• United Pentecostal Church
• Wesleyan Methodist Church of East India

WMCEI in Rengkai was founded on 6 February 1989 with an initial 63 members from 10 households. The church has now grown to more than 500 members.

• Evangelical Assembly Church

Originally called North East India General Mission, the EAC at Rengkai was established on 1982. The total church members currently exceeds 700 in number.

• Evangelical Free Church of India

The EFCI in Rengkai was established on 3 June 1972. The number of members at present exceeds 1700.

• Rengkai Local Church

Housing more than 250 members, the church settled its name on 10 May 1998 after being previously known as AGMM.

• Assemblies of God Church

The AG Church was established in 1962 at Churachandpur, Manipur.

• Lalsungkuo Unity Church

Established on 29 September 1998, the church is located at Muolhlum, Rengkai with total members greater than 200.

• Reformed Presbyterian Church

RPC church was established at Edenthar, Rengkai by Rev. K. Sanga on 23 April 2003. Now the church houses more than 400 members.

• World Missionary Evangelism

WME church was established on 15 February 1985 with 50 members at the time. Now it holds more than 100 members.