The incident happened in Sahebgunj locality, about 35 km from here, under the jurisdiction of Seraikela police station, the police said.
The 23-year-old woman jumped off from the 2nd floor, said sub-divisional police officer (SDPO) Seraikela, Avinash Kumar.
She was taken to a nearby hospital where doctors declared her dead, he said.
Kumar said the exact reason behind the incident is yet to be ascertained.
Investigation is on, he added.