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| County : | Hampden County |
| State : | Massachusetts (MA) |
| Land Area : | 617.14 sq mi |
| Water Area : | 17.11 sq mi |
| Latitude : | 42.1361975 |
| Longitude : | -72.6356476 |
| Population (2010): | 463,490 |
| Population Estimate (2012) : | 464,072 |
| Population Density : | 751.03/sq mi |
| Housing Units (2012) : | 192,175 |
| Median Household Income (2012) : | $49,729 (Massachusetts : $66,658, USA : $53,046) |
| Median Family Income (2012) : | $61,871 (Massachusetts : $84,380, USA : $64,585) |
| Median House Price (2012) : | $201,400 (Massachusetts : $335,500, USA : $181,400) |
Hampden County Cities / Towns
| Agawam Town City (28,438) | Blandford (393) | Chester (627) |
| Chicopee City (55,298) | Holland (1,464) | Holyoke City (39,880) |
| Longmeadow (15,784) | Monson Center (2,107) | Palmer Town City (12,140) |
| Russell (786) | Springfield City (153,060) | Westfield City (41,094) |
| West Springfield Town City (28,391) | Wilbraham (3,915) |
Hampden County Zip Codes
| 01001 (16,769) | 01008 (1,263) | 01009 (741) |
| 01010 (3,609) | 01011 (1,370) | 01013 (23,188) |
| 01020 (29,668) | 01022 (2,451) | 01028 (15,720) |
| 01030 (11,669) | 01034 (2,021) | 01036 (5,109) |
| 01040 (39,880) | 01050 (2,530) | 01056 (21,103) |
| 01057 (8,534) | 01069 (8,469) | 01071 (1,596) |
| 01077 (9,502) | 01079 (692) | 01080 (2,334) |
| 01081 (1,698) | 01085 (41,117) | 01086 (687) |
| 01089 (28,391) | 01095 (14,319) | 01097 (111) |
| 01103 (2,479) | 01104 (22,865) | 01105 (12,350) |
| 01106 (16,021) | 01107 (11,611) | 01108 (26,688) |
| 01109 (30,250) | 01118 (14,071) | 01119 (14,152) |
| 01128 (2,631) | 01129 (7,019) | 01151 (8,698) |
| 01521 (2,481) |