As per 2001 census of India, Hussainabad (Japla) had a population of 23,433. Males constitute 53% of the population and females 47%. Hussainabad has an average literacy rate of 54%, lower than the national average of 59.5%. Here male literacy is 62%, and female literacy is 45%. In Hussainabad, 18% of the population is under 6 years of age.

In state government records the place is known as Hussainabad but central government recognizes it by the name of Japla, hence the railway station is also named as Japla. In 1740 ‘Hidayat Ali Khan’ was nominated as Jagirdar of Japla in Jharkhand state (at that time it was in Bihar). Hussainabad is named after Nawab Ghulam Hussain. The ruins of their fortress is still exist. After Hussain, Kayastha, Brahmin and Rajput families influenced the local politics and were instrumental in its development.

Hussainabad is situated in Nort West region of Jharkhand at 24.53°N 84.02°E. It has an average elevation of 145 m (476 ft).

Japla is a small town in Jharkhand serving as the main market for nearby villages. It is on the border of Jharkhand and Bihar seperated by Kararbagh River. Towards the Bihar from Japla, the following stations are Kajratnawadih and Nabinagar where as towards district following stations are Haidarnagar and Kosiara.
Railway is the main source for intercity commutation but local buses and small vehicles also operate between nearby cities.

Approximately 4 km from Japla is Sone Valley Cements Limited (formerly known as Sone Valley Port Land Cement Company Limited), on the bank of Sone river, which ceased operating in 1993. It was first portland cement factory of India established during British regime. It is said, that the Mohraon Bungalow of Sone valley Cements was among some of the finest bungalows in the state of Bihar, and equipped with modern amenities. After the closure of the factory, the bungalow became dilapidated. Initial economic growth in Japla could be attributed to the cement factory, whose employees visited town to purchase goods for day-to-day needs, thus promoting the town’s trade and commerce. The town now serves as the main market for nearby villages.

Because of government inattention, Japla has a very basic infrastructure. Roads are single carriageway, without sewerage existent, although water tank is established, but supply is irregular.

After establishment of Pachamba Power Grid, the condition of electricity supply is better than nearby towns with less than 8 hours power cut in a day. Solar power is also being used for street lighting and domestic purposes in some houses of Japla as initiated by goverment.

The major source of income of townspeople is in small trading businesses and agriculture. The people of the villages surrounding the town engage in agriculture. The government is the biggest employer with the majority of the jobs coming from banks, schools and Government offices.

Convenience in Japla include the nationalized banks of State Bank of India and Punjab National Bank , a post office, four petrol pumps, and picture halls.