Hampden County, Massachusetts
county in Massachusetts, United States
Hampden County is a county in the U.S. state of Massachusetts. As of the 2010 census, the population was 463,490. As of 2018, the population is estimated to be 470,406. The county seat is Springfield.
Location within the U.S. state of Massachusetts
Massachusetts's location within the U.S.
|Named for||John Hampden|
|• Total||634 sq mi (1,640 km2)|
|• Land||617 sq mi (1,600 km2)|
|• Water||17 sq mi (40 km2) 2.7%%|
| • Estimate |
|• Density||751/sq mi (290/km2)|
|Time zone||UTC−5 (Eastern)|
|• Summer (DST)||UTC−4 (EDT)|
|Congressional districts||1st, 2nd|