In a land area of 24,409 square kilometers, the diocesan territory covers the town of Malang and other areas in East Java including Jember, Banyuwangi, Madura, Lumajang, Pasuruan, Probolinggo, Purworejo, Situbondo.
In the diocesan territory the population was 16,498,709 at end of 2016. As a province, East Java has the greatest population density. People are from different ethnic backgrounds including Javanese, Chinese, Dayak, and Flores.
Javanese with different dialects is in use in the diocesan territory, also Madurese language.
Diocese of Malang appeared in history, tied in time and space. As the Society of People of God, open and popular in the community, the Catholic Church of the Diocese of Malang needs to have sensitivity to the needs of the people, for the present and future.
Pioneering the way of God's Kingdom in the eastern part of Java began in 1580, when the Portuguese shipping in a storm had to anchor in Panarukan. It is not clear whether there was already a preaching effort since the visit of the Portuguese, who brought Father Bernardino Ferrari. They left Panarukan and sailed to the Moluccas. A few years later, the priests of the Dominican Order tried to spread the Gospel in Panarukan and Banyuwangi. Recorded are the names of Fathers Emmanuele, Pascuale, Pietro and Giorgio. There is no information regarding the work of the Dominican Order in the 16th century, until they were reportedly drawn to Malacca, leaving Pascuale as a martyr.
The land, sea and air transportations are available in the diocese. Villages can be accessed from the main asphalted roads. Almost every island has harbor connecting one another, and every day the sea transportations are available.
People make up of civil servants, farmers, traders and mostly employees.
The telecommunication in the diocese is very good. Almost all parts in the diocese can be reached by phone, the Internet, television and radio.
Malang is known as the City of Education, because it has many reputable universities. Besides universities, there are also reputable senior high schools.
The ethnic and cultural richness adds to the traditional arts. One of these traditional arts is Topeng Malangan puppet show. The styles of the arts can be traced back to the three cultures of Central Java, Madura and Tengger. People in Malang are known for their dynamics and hard work.
There is also a center for the appreciation of local arts, which is called Taman Krida Budaya Jawa Timur. Here, various local arts are often performed, such as Ludruk, Ketoprak, Wayang Orang, Wayang Kulit, Reog, Kuda Lumping and Sendra Tari.