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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.
County Facts. Population: 73,938. Land Area: 6,672. Incorporation Date: 1839. County Seat: Houlton. Contact Information. Address: 144 Sweden Street, Suite 1 Caribou, Maine 04736 Map It. Tel: (207) 493-3318 . Fax: (207) 493-3491