Nisko is a town located in the Subcarpathian Voivodeship of southeastern Poland. It is situated on the banks of the San River and serves as a primary location within Nisko County. As of December 31, 2021, the town had a recorded population of 15,048 inhabitants.
The town functions as part of a small urban agglomeration formed in conjunction with its neighboring city, Stalowa Wola. It is identified by the local pronunciation [ˈɲiskɔ].