Plum Island is located in Newburyport, Massachusetts. There are roughly 255 residents, living in 130 households. The average temperature for Plum Island this time of the year is low of 61F and high of 80F. On average, Plum Island gets about 3.33 inches of precipitation in July. Most residents are home owners (70%), have a post secondary degree (63%) and are single, no kids (53%).
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