Gmina Niwiska is a rural gmina (administrative district) in Kolbuszowa County, Subcarpathian Voivodeship, in south-eastern Poland. Its seat is the village of Niwiska, which lies approximately 12 kilometres (7 mi) west of Kolbuszowa and 36 km (22 mi) north-west of the regional capital Rzeszów. The gmina covers an area of 95.192 square kilometres (36.75 sq mi), and as of 2006 its total population is 5,780. (from Wikipedia)