Petersham is a town in Worcester County, Massachusetts. Petersham's population is around 1,234. The town takes up a total of 68.3 square miles. There are 474 housing units at an average density of 8.7 per square mile. The average house size in Petersham is 1400-1800 square feet. The average single family home price is around $227,200 with the average rental at around $1,438. 88.2% of residences in Petersham are Single Family Homes.
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