The Springfield metropolitan area, also known as Greater Springfield, is a region that is socio-economically and culturally tied to the City of Springfield, Massachusetts. The U.S. Office of Management and Budget defines the Springfield, MA Metropolitan Statistical Area (MSA) as consisting of three counties in Western Massachusetts. As of April 1, 2020, the metropolitan area's population was estimated at 699,162, making it the 88th-largest metropolitan area in the United States.

Franklin County is a nongovernmental county located in the northwestern part of the U.S. state of Massachusetts. As of the 2020 census, the population was 71,029, which makes it the least-populous county on the Massachusetts mainland, and the third-least populous county in the state. Its traditional county seat and most populous city is Greenfield. Its largest town by area is New Salem. Franklin County comprises the Greenfield Town, MA Micropolitan Statistical Area, which is included in the Springfield-Greenfield Town, MA Combined Statistical Area.