Winchendon, MA is a city located in Worcester County, Massachusetts and has a land area of 42.77 square miles (110.77 km2). The water area for the city is 1.05 square miles or 2.72 km2. There is one unique zip code in Winchendon, Massachusetts and it is 01475. The area code(s) for Winchendon is 978.
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