Boston is 30% larger than Worcester, Massachusetts.
Area: 129 km2 calculated
Boston is the capital and largest city of the Commonwealth of Massachusetts in the United States. Boston also serves as county seat of Suffolk County. Wikipedia
Area: 100 km2 calculated
Worcester is a city and the county seat of Worcester County, Massachusetts, United States. Named after Worcester, England, as of the 2010 Census the city's population was 181,045, making it the second largest city in New England after Boston. Wikipedia