36 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Deerfield | 1 | 44,169 | 40,718 | 1.27% | 2,758 | 16 | Township |
| Kent | 2 | 27,606 | 28,176 | -0.41% | 2,993 | 9 | City |
| Aurora | 3 | 18,165 | 17,264 | 1% | 793 | 23 | City |
| Streetsboro | 4 | 18,016 | 17,320 | 0.78% | 768 | 23 | City |
| Brimfield | 5 | 11,545 | 11,350 | 0.43% | 564 | 20 | Township |
| Ravenna | 6 | 11,216 | 11,315 | -0.18% | 1,991 | 6 | City |
| Ravenna | 7 | 9,222 | 8,983 | 0.58% | 460 | 20 | Township |
| Rootstown | 8 | 8,765 | 8,604 | 0.47% | 332 | 26 | Township |
| Suffield | 9 | 6,073 | 5,978 | 0.43% | 268 | 23 | Township |
| Randolph | 10 | 5,381 | 5,282 | 0.47% | 185 | 29 | Township |
| Shalersville | 11 | 5,337 | 5,248 | 0.43% | 197 | 27 | Township |
| Mantua | 12 | 4,672 | 4,575 | 0.54% | 178 | 26 | Township |
| Mogadore | 13 | 3,821 | 3,811 | 0.05% | 1,782 | 2 | Village |
| Nelson | 14 | 3,147 | 3,097 | 0.41% | 131 | 24 | Township |
| Brimfield | 15 | 3,097 | 3,498 | -0.51% | 780 | 4 | CDP |
| Deerfield | 16 | 2,914 | 2,839 | 0.62% | 124 | 23 | Township |
| Palmyra | 17 | 2,829 | 2,781 | 0.43% | 115 | 25 | Township |
| Freedom | 18 | 2,719 | 2,649 | 0.59% | 114 | 24 | Township |
| Atwater | 19 | 2,599 | 2,562 | 0.39% | 102 | 25 | Township |
| Silver Lake | 20 | 2,507 | 2,514 | -0.08% | 1,763 | 1 | Village |
| Garrettsville | 21 | 2,487 | 2,456 | 0.24% | 979 | 3 | Village |
| Hiram | 22 | 2,435 | 2,399 | 0.37% | 106 | 23 | Township |
| Edinburg | 23 | 2,394 | 2,355 | 0.46% | 99 | 24 | Township |
| Windham | 24 | 1,827 | 1,784 | 0.5% | 82 | 22 | Township |
| Charlestown | 25 | 1,793 | 1,733 | 0.67% | 87 | 21 | Township |
| Windham | 26 | 1,683 | 1,660 | 0.24% | 818 | 2 | Village |
| Boston Heights | 27 | 1,405 | 1,404 | 0% | 201 | 7 | Village |
| Sawyerwood | 28 | 1,341 | 1,604 | -0.96% | 1,817 | 1 | CDP |
| Suffield | 29 | 1,319 | 1,214 | 7.15% | 487 | 3 | CDP |
| Brady Lake | 30 | 1,085 | 933 | 7.11% | 819 | 1 | CDP |
| Deerfield | 31 | 1,057 | 1,052 | -0.09% | 34 | 31 | Township |
| Mantua | 32 | 1,016 | 1,003 | 0.2% | 715 | 1 | Village |
| Hiram | 33 | 965 | 994 | -0.62% | 880 | 1 | Village |
| Deerfield | 34 | 812 | 826 | -0.49% | 25 | 33 | Township |
| Atwater | 35 | 738 | 912 | -0.14% | 705 | 1 | CDP |
| Sugar Bush Knolls | 36 | 218 | 216 | 0% | 932 | 0 | Village |
Deerfield is the largest city in Portage County, with a population of 44,169.
Sugar Bush Knolls is the smallest city in Portage County, with a population of 218.
There are 36 cities in Portage County, Ohio.