Gmina Gostynin is a rural gmina (administrative district) in Gostynin County, Masovian Voivodeship, in east-central Poland. Its seat is the town of Gostynin, although the town is not part of the territory of the gmina.The gmina covers an area of , and as of 2006 its total population is 12,245.Gmina Gostynin is bordered by the to...