In a land area of 6754 square kilometers, the diocesan territory covers Gumla civil district and part of Simdega district.
Major tribal groups are: Oraon, Kharia, Munda, Asur, Chick-Baraik, Lohra, and Birhor.
Hindi, Sadri, Kurukh (Oraon), Kharia and Mundari are the languages spoken in the diocesan territory.
Two regions of the present Gumla diocese, namely Nagpur and Barway, were among the most promising fields of apostolate when, in the last decade of the 19th century, the missionaries of Belgian Jesuit province evangelized what was then called "The Mission of Bengal". Fathers Louis Cardon and Constant Lievens were the most outstanding among them. In 1922, those regions became respectively the deaneries of Konbir-Noatoli and Tongo (Barway) of the Ranchi archdiocese. But it took more than a hundred years after the first period of evangelization when together with other areas, they were united in the present diocese of Gumla, which was erected on May 28, 1993 by Pope John Paul II . Gumla diocese is part of the Ranchi ecclesiastical province. Bishop Michael Minj, S.J., was the first bishop of Gumla.
There are three state assembly seats in the diocesan area: Gumla, Bishunpur and Sisai. Some portion of it falls under Simdega assembly constituency.
Road transport is prevalent in the area of the diocese.
The per capita income in the diocesan territory is Rs. 15622 ($343) as of February 2011. People depend for their livelihood only on agriculture, especially on paddy crop.
Mobile phones are spreading fast. No TV broadcasting station and radio stations in the territory.
Literacy rate in the diocesan territory is 65.75 percent.
Music, song, dance and drama in the region are all based on tribal culture. All the tribal communities have always been linked with nature. In the diocese, Oraons form the major tribal group.
This fabled church is also known by its Syriac name Mar Sleeva (Holy Cross) Church
St. Mary’s Cathedral Church in Ranchi, the capital of Jharkhand state, is the mother church in the tribal belt of eastern India, where Belgian Jesuits laid the foundation of Catholicism in 19th century. This brownish Church, dedicated to the Immaculate Conception of Virgin Mary, stands on Dr. Camil Bulcke Path and nestles between St. Xavier’s College and St. Albert Major Seminary.
Basilica of Our Lady of Graces in Sardhana is a historic church that lives the memory of love and benevolence of the sole female Roman Catholic ruler in India. Our Lady of Graces Church of Sardhana stands at Meerut district in Uttar Pradesh of northern India. Consecrated in 1822, this 200-feet long church with a high central dome over the main altar, is one of the largest churches in northern India.
Saint Thomas Cathedral Basilica at Mylapore is a monumental declaration on ancient root of Christianity in India. The church was built over the tomb of St. Thomas, the Apostle who is believed to have preached Christianity in India. The cathedral preserves 2000-year-old bones of the saint and the lance that pierced him to death. Popularly known as Santhome Church, the cathedral at Chennai (formerly Madras) in Tamil Nadu state was constructed during the Portuguese era in the 16th century. “San Thome” assumes its name from St. Thomas.
St. Joseph’s Church in Lahore is the oldest Catholic Church in Pakistan that has flourished since the 19th century despite deadly sectarian violence in recent years. The church at Sarfaraz Rafiqui Road in Lahore was established as a wooden structure during the British colonial era, on Oct. 31, 1842, to provide pastoral care to the British soldiers. It completed 180 years this year.
Mokama Marian shrine on the southern bank of Ganges River bears the legacy persecuted Nepali Catholics banished from their homeland to India for refusing to renounce their faith. Our Lady of Divine Grace Church at Mokama stands about 90 kilometers from Patna, the capital of eastern Indian state of Bihar. Mother Mary is popularly known as Mokama Mata (Mother of Mokama). The church was built to honor Mary in 1947.
The Cathedral of Good Shepherd in Singapore is a historic National Monument, but it also holds first-class relics of a French saint who brought Catholicism on the shores of city-state two centuries ago. Built in 1847, the Good Shepherd Cathedral is the oldest Catholic Church and mother church of all Catholic churches in Singapore.
Santa Cruz Cathedral Basilica at Fort Kochi is one of the finest churches and a historic but also a landmark in Kerala state of southern India. Santa Cruz Church blends Indo-European and Gothic architectural style that draws tens of thousands of pilgrims and tourists every year. The cathedral is a great place of devotion and historic significance that survived colonial conquests and invasions to the city.