39 zips
| Zip Code | City | Population ↓ |
|---|---|---|
| 01085 | Westfield | 41,466 |
| 01040 | Holyoke | 37,949 |
| 01109 | Springfield | 31,418 |
| 01020 | Chicopee | 30,230 |
| 01089 | West Springfield | 28,635 |
| 01108 | Springfield | 27,409 |
| 01013 | Chicopee | 22,950 |
| 01104 | Springfield | 21,745 |
| 01056 | Ludlow | 20,846 |
| 01028 | East Longmeadow | 16,283 |
| 01001 | Agawam | 16,136 |
| 01106 | Longmeadow | 15,961 |
| 01118 | Springfield | 15,009 |
| 01095 | Wilbraham | 14,615 |
| 01119 | Springfield | 14,059 |
| 01030 | Feeding Hills | 12,374 |
| 01107 | Springfield | 12,270 |
| 01105 | Springfield | 11,469 |
| 01151 | Indian Orchard | 9,627 |
| 01077 | Southwick | 9,222 |
| 01069 | Palmer | 9,077 |
| 01057 | Monson | 8,200 |
| 01129 | Springfield | 5,993 |
| 01036 | Hampden | 4,937 |
| 01010 | Brimfield | 3,694 |
| 01128 | Springfield | 3,252 |
| 01521 | Holland | 2,576 |
| 01103 | Springfield | 2,336 |
| 01080 | Three Rivers | 2,308 |
| 01034 | Granville | 2,100 |
| 01022 | Chicopee | 2,045 |
| 01081 | Wales | 1,704 |
| 01008 | Blandford | 1,324 |
| 01071 | Russell | 1,219 |
| 01011 | Chester | 1,205 |
| 01009 | Bondsville | 790 |
| 01079 | Thorndike | 282 |
| 01097 | Woronoco | 45 |
| 01144 | Springfield | 0 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 39 ZCTAs in Hampden County, Massachusetts (US Census).