Pymatuning State Park is a 3512 acres (14.21 km2) Ohio state park near Andover, Ashtabula County, Ohio in the United States. Pymatuning State Park contains 1,407 acres (5.69 km2) of Pymatuning Lake, one-quarter of which is in Ohio and three-quarters of which is in Pennsylvania. The lake provides fishing and boating year round.