Grindstone Map
The City of Grindstone is located in Penobscot County in the State of Maine. Find directions to Grindstone, browse local businesses, landmarks, get current traffic estimates, road conditions, and more. The Grindstone time zone is Eastern Daylight Time which is 5 hours behind Coordinated Universal Time (UTC).
Nearby cities include Hay Brook, East Millinocket, Millinocket, Medway, Benedicta.