Tapolca is a town in Veszprém County, Hungary, close to Lake Balaton. It is located at around 46°52′58″N 17°26′29″E / 46.88278°N 17.44139°…Tapolca is a town in Veszprém County, Hungary, close to Lake Balaton. It is located at around 46°52′58″N 17°26′29″E / 46.88278°N 17.44139°E. The town has an outer suburb, Tapolca-Diszel, approximately 5 km to the East.