Duliajan is an important oil town located in the Dibrugarh district of the northeastern state of India, Assam. It is surrounded by lush green tea estates which are a treat for the eyes. Guwahati, is located at a distance of 503 km. from Duliajan. It is one of the largest tea growing areas of the world. The headquarters of Oil India is located in Duliajan. The town is easily accessible and the nearest railway stations are at Tinsukia and Dibrugarh Town at a distance of 30 km. and 50 km. respectively. The nearest airport is at Dibrugarh at a distance of 48 km. Oil and tea industry are the main industries which provide employment to many people in the town.

According to the 2001 census report, Duliajan had a small population of 5320 inhabitants. Males constitute 53% of the population and the females constitute 47% of the population. In Duliajan, 11% of the population is less than six years of age. Duliajan has an average literacy rate of 77%, which is much higher than the national average literacy rate of 59.5%. The male literacy rate is 81% and, the female literacy rate is 73%. The high literacy rate of Duliajan is because of the good educational facilities available in the town.