94 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Worcester | 1 | 211,511 | 205,056 | 0.93% | 5,661 | 37 | City |
| Worcester | 2 | 209,331 | 205,056 | 0.41% | 5,603 | 37 | City |
| Leominster | 3 | 43,541 | 43,755 | -0.1% | 1,511 | 29 | City |
| Leominster | 4 | 43,385 | 43,755 | -0.28% | 1,505 | 29 | City |
| Fitchburg | 5 | 41,535 | 41,675 | -0.05% | 1,493 | 28 | City |
| Fitchburg | 6 | 41,515 | 41,675 | -0.08% | 1,492 | 28 | City |
| Shrewsbury | 7 | 39,461 | 38,269 | 0.73% | 1,902 | 21 | Town |
| Milford | 8 | 30,221 | 30,345 | -0.06% | 2,049 | 15 | Town |
| Milford | 9 | 28,198 | 26,072 | 0.75% | 2,777 | 10 | CDP |
| Westborough | 10 | 22,922 | 21,541 | 2.03% | 1,113 | 21 | Town |
| Gardner | 11 | 21,030 | 21,221 | 0.13% | 953 | 22 | City |
| Gardner | 12 | 20,809 | 21,221 | -0.39% | 943 | 22 | City |
| Grafton | 13 | 20,203 | 19,648 | 0.57% | 886 | 23 | Town |
| Holden | 14 | 19,944 | 19,902 | 0.03% | 568 | 35 | Town |
| Southbridge Town | 15 | 18,001 | 17,698 | 0.34% | 889 | 20 | City |
| Southbridge Town | 16 | 17,852 | 17,698 | -0.08% | 882 | 20 | City |
| Webster | 17 | 17,489 | 17,739 | -0.3% | 1,415 | 12 | Town |
| Auburn | 18 | 16,858 | 16,866 | 0.11% | 1,089 | 15 | Town |
| Northbridge | 19 | 16,615 | 16,318 | 0.48% | 962 | 17 | Town |
| Northborough | 20 | 15,659 | 15,718 | -0.1% | 848 | 18 | Town |
| Clinton | 21 | 15,636 | 15,410 | 0.34% | 2,766 | 6 | Town |
| Uxbridge | 22 | 14,740 | 14,196 | 0.73% | 498 | 30 | Town |
| Millbury | 23 | 14,078 | 13,825 | 0.27% | 896 | 16 | Town |
| Charlton | 24 | 13,393 | 13,307 | 0.01% | 318 | 42 | Town |
| Oxford | 25 | 13,276 | 13,331 | -0.11% | 501 | 27 | Town |
| Webster | 26 | 12,477 | 11,719 | 0.57% | 4,200 | 3 | CDP |
| Athol | 27 | 11,965 | 11,930 | 0.12% | 370 | 32 | Town |
| Spencer | 28 | 11,876 | 11,966 | -0.18% | 362 | 33 | Town |
| Lunenburg | 29 | 11,831 | 11,791 | -0.08% | 448 | 26 | Town |
| Dudley | 30 | 11,791 | 11,906 | -0.25% | 566 | 21 | Town |
| Leicester | 31 | 11,076 | 11,066 | 0.05% | 476 | 23 | Town |
| Winchendon | 32 | 10,497 | 10,347 | 0.27% | 244 | 43 | Town |
| Southborough | 33 | 10,411 | 10,448 | -0.09% | 743 | 14 | Town |
| Sturbridge | 34 | 9,934 | 9,871 | 0.03% | 267 | 37 | Town |
| Rutland | 35 | 9,626 | 9,073 | 1.07% | 274 | 35 | Town |
| Lancaster | 36 | 9,588 | 8,421 | 4.27% | 349 | 27 | Town |
| Sutton | 37 | 9,510 | 9,353 | 0.39% | 293 | 32 | Town |
| Douglas | 38 | 9,371 | 8,997 | 0.7% | 257 | 36 | Town |
| Athol | 39 | 9,369 | 8,323 | 0.8% | 1,144 | 8 | CDP |
| Blackstone | 40 | 9,250 | 9,190 | 0.22% | 833 | 11 | Town |
| Upton | 41 | 8,637 | 8,003 | 1.92% | 400 | 22 | Town |
| Westminster | 42 | 8,439 | 8,229 | 0.37% | 238 | 35 | Town |
| Templeton | 43 | 8,371 | 8,144 | 0.66% | 263 | 32 | Town |
| Sterling | 44 | 8,300 | 7,980 | 0.58% | 271 | 31 | Town |
| West Boylston | 45 | 7,822 | 7,637 | 0.2% | 604 | 13 | Town |
| Whitinsville | 46 | 7,415 | 7,435 | 0.64% | 2,036 | 4 | CDP |
| Clinton | 47 | 7,354 | 7,058 | -0.03% | 4,926 | 1 | CDP |
| Harvard | 48 | 6,990 | 6,847 | 0.45% | 264 | 26 | Town |
| Northborough | 49 | 6,804 | 6,532 | 0.62% | 2,071 | 3 | CDP |
| Ashburnham | 50 | 6,475 | 6,312 | 0.47% | 169 | 38 | Town |
| Mendon | 51 | 6,391 | 6,226 | 0.47% | 360 | 18 | Town |
| Hopedale | 52 | 6,036 | 6,008 | 0.07% | 1,165 | 5 | Town |
| Bolton | 53 | 5,740 | 5,668 | 0.02% | 288 | 20 | Town |
| Spencer | 54 | 5,621 | 5,810 | -0.09% | 2,665 | 2 | CDP |
| Barre | 55 | 5,516 | 5,524 | -0.18% | 124 | 44 | Town |
| Oxford | 56 | 5,237 | 5,926 | -1.08% | 1,512 | 3 | CDP |
| Boylston | 57 | 5,044 | 4,854 | 0.72% | 314 | 16 | Town |
| Warren | 58 | 5,040 | 4,966 | 0.4% | 183 | 28 | Town |
| Paxton | 59 | 5,004 | 4,946 | -0.12% | 341 | 15 | Town |
| North Brookfield | 60 | 4,696 | 4,746 | -0.3% | 221 | 21 | Town |
| Winchendon | 61 | 4,523 | 4,673 | 0.47% | 1,997 | 2 | CDP |
| Westborough | 62 | 4,465 | 4,024 | 0.63% | 2,365 | 2 | CDP |
| Hubbardston | 63 | 4,346 | 4,316 | 0% | 106 | 41 | Town |
| Hopedale | 64 | 4,233 | 3,643 | 0.76% | 2,422 | 2 | CDP |
| West Brookfield | 65 | 3,886 | 3,824 | 0.54% | 190 | 20 | Town |
| Berlin | 66 | 3,535 | 3,270 | 1.58% | 273 | 13 | Town |
| Princeton | 67 | 3,500 | 3,492 | -0.11% | 99 | 35 | Town |
| Brookfield | 68 | 3,462 | 3,439 | 0.2% | 223 | 16 | Town |
| Millville | 69 | 3,128 | 3,166 | -0.29% | 643 | 5 | Town |
| Cordaville | 70 | 2,942 | 2,884 | 0.65% | 1,620 | 2 | CDP |
| Fiskdale | 71 | 2,888 | 3,015 | 0.7% | 912 | 3 | CDP |
| Hardwick | 72 | 2,662 | 2,662 | -0.04% | 69 | 39 | Town |
| East Douglas | 73 | 2,563 | 2,985 | 0% | 752 | 3 | CDP |
| Upton | 74 | 2,492 | 2,279 | -1.35% | 1,009 | 2 | CDP |
| North Brookfield | 75 | 2,480 | 2,423 | 0.57% | 1,680 | 1 | CDP |
| Baldwinville | 76 | 2,350 | 2,137 | 0.9% | 916 | 3 | CDP |
| Lunenburg | 77 | 2,246 | 1,593 | 1.45% | 592 | 4 | CDP |
| Sturbridge | 78 | 2,214 | 2,101 | -0.14% | 415 | 5 | CDP |
| East Brookfield | 79 | 2,186 | 2,222 | -0.36% | 222 | 10 | Town |
| Oakham | 80 | 1,930 | 1,850 | 1.15% | 93 | 21 | Town |
| Phillipston | 81 | 1,722 | 1,724 | -0.06% | 71 | 24 | Town |
| Rutland | 82 | 1,585 | 1,749 | -2.16% | 536 | 3 | CDP |
| South Lancaster | 83 | 1,579 | 1,575 | -1.31% | 1,191 | 1 | CDP |
| West Brookfield | 84 | 1,562 | 1,511 | 0.64% | 1,237 | 1 | CDP |
| East Brookfield | 85 | 1,350 | 1,273 | 0.07% | 834 | 2 | CDP |
| Royalston | 86 | 1,296 | 1,252 | 0.78% | 31 | 42 | Town |
| Petersham | 87 | 1,171 | 1,191 | -0.43% | 22 | 54 | Town |
| South Ashburnham | 88 | 1,046 | 883 | -0.1% | 351 | 3 | CDP |
| West Warren | 89 | 1,032 | 585 | 7.05% | 815 | 1 | CDP |
| New Braintree | 90 | 993 | 992 | 0% | 48 | 21 | Town |
| Brookfield | 91 | 977 | 716 | 1.03% | 848 | 1 | CDP |
| Barre | 92 | 490 | 950 | -6.67% | 310 | 2 | CDP |
| Warren | 93 | 358 | 546 | -16.16% | 279 | 1 | CDP |
| Petersham | 94 | 283 | 256 | 1.07% | 229 | 1 | CDP |
Worcester is the largest city in Worcester County, with a population of 211,511.
Petersham is the smallest city in Worcester County, with a population of 283.
There are 94 cities in Worcester County, Massachusetts.