37 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Springfield city | 1 | 153,002 | 155,280 | -0.22% | 4,801 | 31.87 | City |
| Springfield | 2 | 152,600 | 155,280 | -0.35% | 4,788 | 31.87 | City |
| Chicopee city | 3 | 54,636 | 55,448 | -0.18% | 2,385 | 22.91 | City |
| Chicopee | 4 | 54,431 | 55,448 | -0.37% | 2,376 | 22.91 | City |
| Westfield city | 5 | 40,525 | 40,743 | 0.02% | 876 | 46.26 | City |
| Westfield | 6 | 40,353 | 40,743 | -0.19% | 872 | 46.26 | City |
| Holyoke city | 7 | 37,506 | 38,154 | -0.16% | 1,772 | 21.17 | City |
| Holyoke | 8 | 37,277 | 38,154 | -0.47% | 1,761 | 21.17 | City |
| Agawam Town city | 9 | 28,472 | 28,626 | 0.12% | 1,221 | 23.32 | City |
| West Springfield Town city | 10 | 28,314 | 28,768 | -0.19% | 1,692 | 16.73 | City |
| Agawam Town | 11 | 28,259 | 28,626 | -0.26% | 1,212 | 23.32 | City |
| West Springfield Town | 12 | 28,194 | 28,768 | -0.41% | 1,685 | 16.73 | City |
| Ludlow town | 13 | 20,817 | 20,766 | -0.07% | 765 | 27.20 | Town |
| East Longmeadow town | 14 | 16,460 | 16,389 | 0.25% | 1,272 | 12.94 | Town |
| Longmeadow | 15 | 15,790 | 15,736 | 0% | 1,737 | 9.09 | CDP |
| Longmeadow town | 16 | 15,621 | 15,813 | 0% | 1,719 | 9.09 | Town |
| Wilbraham town | 17 | 14,542 | 14,581 | 0.08% | 660 | 22.04 | Town |
| Palmer Town city | 18 | 12,285 | 12,425 | -0.12% | 389 | 31.58 | City |
| Palmer Town | 19 | 12,241 | 12,425 | -0.3% | 388 | 31.58 | City |
| Southwick town | 20 | 9,215 | 9,220 | 0.11% | 299 | 30.82 | Town |
| Monson town | 21 | 8,130 | 8,134 | 0.16% | 184 | 44.22 | Town |
| Hampden town | 22 | 4,919 | 4,953 | 0.06% | 251 | 19.61 | Town |
| Wilbraham | 23 | 3,820 | 3,251 | -0.16% | 683 | 5.59 | CDP |
| Brimfield town | 24 | 3,719 | 3,689 | 0.27% | 107 | 34.77 | Town |
| Holland town | 25 | 2,555 | 2,596 | -0.2% | 208 | 12.28 | Town |
| Wales town | 26 | 1,794 | 1,827 | -0.22% | 114 | 15.75 | Town |
| Russell town | 27 | 1,619 | 1,639 | -0.25% | 93 | 17.47 | Town |
| Monson Center | 28 | 1,564 | 1,688 | -2.31% | 466 | 3.35 | CDP |
| Granville town | 29 | 1,519 | 1,537 | -0.2% | 36 | 42.32 | Town |
| Holland | 30 | 1,449 | 1,430 | -0.07% | 546 | 2.65 | CDP |
| Chester town | 31 | 1,201 | 1,225 | -0.41% | 33 | 36.59 | Town |
| Blandford town | 32 | 1,196 | 1,213 | -0.33% | 23 | 51.58 | Town |
| Montgomery town | 33 | 841 | 817 | 0.96% | 56 | 14.95 | Town |
| Chester | 34 | 837 | 935 | 1.7% | 600 | 1.40 | CDP |
| Russell | 35 | 520 | 658 | -3.35% | 226 | 2.30 | CDP |
| Tolland town | 36 | 469 | 468 | 0.21% | 15 | 31.55 | Town |
| Blandford | 37 | 338 | 338 | -1.17% | 294 | 1.15 | CDP |
Springfield city is the largest city in Hampden County, with a population of 153,002.
Blandford is the smallest city in Hampden County.
There are 37 cities in Hampden County, Massachusetts.