Aye, they're still worshipped, though it's said they have little power in places where their worshippers are few. The weirwoods of the Old Gods were chopped down in the south to make way for the Seven after the Andals came to Westeros from Essos, and the Seven don't have much sway in the North. No sway at all north of the Wall, actually -- though you must understand, the Wall doesn't divide the North from the southern kingdoms. It protects the North from the White Walkers that come from the Land of Always Winter.

There was a man who sacrificed to them, too, though I don't think many others would worship them as gods. They fear them as monsters.