Grindstone Twp Real EstateGrindstone Twp real estate listings include condos, townhomes, and single family homes for sale. Commercial properties are also available. If you see a property you’re interested in, contact a Grindstone Twp real estate agent to arrange a tour today! Grindstone Twp, Maine has a population of 549. The median household income in Grindstone Twp, Maine is $39,773. The median household income for the surrounding county is $47,886 compared to the national median of $57,652. The median age of people living in Grindstone Twp is 47.7 years. Grindstone Twp WeatherThe average high temperature in July is 78.3 degrees, with an average low temperature in January of 4.3 degrees. The average rainfall is approximately 45 inches per year, with 84.1 inches of snow per year. Nearby Homes for Sale |