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Shirley is a town in Piscataquis County, Maine, United States. The town was named after Shirley, Massachusetts. The population was 233 at the 2010 census.
According to the most recent demographics data available from the Census Bureau released in December of 2017, Figure 1 Chelmsford indicates it has 34,906 population which is the 3d most of all other places in the area. The city with the highest population in the area is Lowell with a population of 109,871 is approximately 3.1 times bigger.