Worcester County, Massachusetts

county in Massachusetts, United States

Worcester County is a county located in the U.S. state of Massachusetts. As of the 2020 census, the population was 862,111,[1] making it the second-most populous county in Massachusetts while also being the largest in area.

Worcester County
Worcester County Courthouse
Worcester County Courthouse
Official seal of Worcester County
Map of Massachusetts highlighting Worcester County
Location within the U.S. state of Massachusetts
Map of the United States highlighting Massachusetts
Massachusetts's location within the U.S.
Coordinates: 42°21′N 71°55′W / 42.35°N 71.91°W / 42.35; -71.91
Country United States
State Massachusetts
FoundedApril 2, 1731
Named forWorcester, Massachusetts
Largest cityWorcester
 • Total1,579 sq mi (4,090 km2)
 • Land1,511 sq mi (3,910 km2)
 • Water68 sq mi (180 km2)
 • Total862,111
 • Density570.7/sq mi (220.3/km2)
Time zoneUTC−5 (Eastern)
 • Summer (DST)UTC−4 (EDT)
Congressional districts1st, 2nd, 3rd, 4th, 5th

The largest city and traditional county seat is the city of Worcester.[2]


  1. "QuickFacts: Worcester County, Massachusetts". United States Census Bureau. Retrieved January 3, 2024.
  2. "Find a County". National Association of Counties. Archived from the original on May 31, 2011. Retrieved June 7, 2011.