Canning jars are NOT recyclable, because of the thickness of the glass. Reuse (for canning, food storage, vases, etc.), give to a friend who can use them, put in a tag sale, or if you must, place in the garbage.
What Do I Do With...?
Franklin County Solid Waste
117 Main Street, Greenfield, MA 01301
MA Relay for the hearing impaired: 711 or 1-800-439-2370 (TTY/TDD)