39 zips
| Zip Code | City | Population ↓ |
|---|---|---|
| 1085 | Westfield | 41,592 |
| 1040 | Holyoke | 38,210 |
| 1109 | Springfield | 31,301 |
| 1020 | Chicopee | 30,417 |
| 1089 | West Springfield | 28,755 |
| 1108 | Springfield | 26,198 |
| 1013 | Chicopee | 22,895 |
| 1104 | Springfield | 22,606 |
| 1056 | Ludlow | 20,883 |
| 1028 | East Longmeadow | 16,273 |
| 1001 | Agawam | 16,045 |
| 1106 | Longmeadow | 16,019 |
| 1118 | Springfield | 15,112 |
| 1095 | Wilbraham | 14,673 |
| 1119 | Springfield | 14,182 |
| 1030 | Feeding Hills | 12,561 |
| 1107 | Springfield | 12,443 |
| 1105 | Springfield | 12,045 |
| 1151 | Indian Orchard | 9,467 |
| 1077 | Southwick | 9,244 |
| 1069 | Palmer | 8,516 |
| 1057 | Monson | 8,215 |
| 1129 | Springfield | 6,486 |
| 1036 | Hampden | 4,966 |
| 1010 | Brimfield | 3,699 |
| 1128 | Springfield | 3,063 |
| 1080 | Three Rivers | 2,674 |
| 1521 | Holland | 2,585 |
| 1103 | Springfield | 2,245 |
| 1022 | Chicopee | 2,144 |
| 1034 | Granville | 2,065 |
| 1081 | Wales | 1,716 |
| 1011 | Chester | 1,318 |
| 1071 | Russell | 1,259 |
| 1008 | Blandford | 1,231 |
| 1009 | Bondsville | 699 |
| 1079 | Thorndike | 640 |
| 1097 | Woronoco | 36 |
| 1144 | Springfield | 0 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 39 ZCTAs in Hampden County, Massachusetts (US Census).