50 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Jackson township | 1 | 49,428 | 46,665 | 1.2% | 1,393 | 35.49 | Township |
| Jackson township | 2 | 43,174 | 43,316 | -0.03% | 1,187 | 36.37 | Township |
| Jackson | 3 | 6,173 | 6,255 | -0.26% | 682 | 9.05 | City |
| Jackson township | 4 | 6,060 | 6,079 | 0.17% | 164 | 36.93 | Township |
| Wellston | 5 | 5,483 | 5,417 | 0.24% | 787 | 6.97 | City |
| Jackson township | 6 | 5,011 | 5,043 | 0.1% | 207 | 24.17 | Township |
| Jackson township | 7 | 4,016 | 3,913 | 0.85% | 129 | 31.16 | Township |
| Jackson township | 8 | 3,996 | 4,022 | 0.35% | 197 | 20.30 | Township |
| Jackson township | 9 | 3,658 | 3,677 | -0.14% | 150 | 24.32 | Township |
| Jackson township | 10 | 3,222 | 3,124 | 0.69% | 103 | 31.15 | Township |
| Jackson township | 11 | 3,044 | 3,138 | -0.49% | 85 | 35.72 | Township |
| Jackson township | 12 | 2,767 | 2,777 | 0.07% | 74 | 37.52 | Township |
| Jackson township | 13 | 2,652 | 2,677 | -0.11% | 86 | 30.97 | Township |
| Lick township | 14 | 2,620 | 2,634 | -0.08% | 141 | 18.59 | Township |
| Jackson township | 15 | 2,552 | 2,539 | 0.24% | 68 | 37.31 | Township |
| Jackson township | 16 | 2,427 | 2,415 | 0.29% | 99 | 24.42 | Township |
| Jackson township | 17 | 2,374 | 2,377 | 0.21% | 64 | 37.38 | Township |
| Jackson township | 18 | 2,101 | 2,119 | -0.05% | 87 | 24.08 | Township |
| Jackson township | 19 | 2,007 | 2,024 | 0% | 79 | 25.30 | Township |
| Scioto township | 20 | 1,972 | 1,941 | 0.36% | 47 | 42.28 | Township |
| Coal township | 21 | 1,963 | 1,974 | 0% | 101 | 19.38 | Township |
| Jackson township | 22 | 1,908 | 1,868 | 0.69% | 60 | 31.58 | Township |
| Liberty township | 23 | 1,779 | 1,794 | -0.17% | 44 | 40.65 | Township |
| Jackson township | 24 | 1,758 | 1,796 | -0.51% | 48 | 36.73 | Township |
| Jackson township | 25 | 1,735 | 1,731 | 0.06% | 62 | 27.94 | Township |
| Jackson township | 26 | 1,581 | 1,573 | 0.44% | 44 | 36.07 | Township |
| Jackson township | 27 | 1,415 | 1,408 | 0.5% | 41 | 34.71 | Township |
| Oak Hill | 28 | 1,392 | 1,407 | -0.22% | 1,095 | 1.27 | Village |
| Jackson township | 29 | 1,211 | 1,221 | -0.16% | 31 | 38.79 | Township |
| Jackson township | 30 | 1,184 | 1,190 | 0% | 23 | 51.36 | Township |
| Jackson township | 31 | 1,178 | 1,106 | 1.29% | 28 | 42.32 | Township |
| Jackson township | 32 | 1,170 | 969 | 3.82% | 42 | 27.91 | Township |
| Bloomfield township | 33 | 1,147 | 1,144 | 0.09% | 30 | 38.73 | Township |
| Jackson township | 34 | 1,139 | 1,154 | 0% | 33 | 34.39 | Township |
| Jackson township | 35 | 1,065 | 1,054 | 0.47% | 41 | 25.82 | Township |
| Jackson township | 36 | 1,032 | 1,067 | -0.67% | 44 | 23.60 | Township |
| Milton township | 37 | 1,028 | 1,043 | -0.29% | 26 | 39.38 | Township |
| Jackson township | 38 | 1,017 | 1,035 | -0.39% | 34 | 29.63 | Township |
| Massieville | 39 | 875 | 579 | 7.1% | 464 | 1.88 | CDP |
| Jackson township | 40 | 833 | 846 | -0.6% | 32 | 25.69 | Township |
| Washington township | 41 | 786 | 789 | 0% | 35 | 22.38 | Township |
| Jackson township | 42 | 731 | 719 | 0.41% | 20 | 36.43 | Township |
| Jackson township | 43 | 671 | 704 | -1.03% | 18 | 37.52 | Township |
| Jackson township | 44 | 574 | 592 | -0.35% | 21 | 27.15 | Township |
| Jackson township | 45 | 505 | 498 | 0.4% | 16 | 32.31 | Township |
| Jackson township | 46 | 471 | 459 | 1.07% | 21 | 22.27 | Township |
| Coalton | 47 | 439 | 444 | -0.23% | 791 | 0.56 | Village |
| Jackson township | 48 | 408 | 414 | -0.24% | 21 | 19.86 | Township |
| Andersonville | 49 | 347 | 584 | -7.47% | 153 | 2.27 | CDP |
| Jackson township | 50 | 343 | 349 | 0% | 47 | 7.35 | Township |
Jackson township is the largest city in Jackson County, with a population of 49,428.
Jackson township is the smallest city in Jackson County.
There are 50 cities in Jackson County, Ohio.