| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density (/mi²) | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Kansas City | 1 | 523,322 | 508,128 | 0.4% | 1,664 | 315 | City |
| Independence | 2 | 121,444 | 122,866 | -0.19% | 1,557 | 78 | City |
| Lee's Summit | 3 | 108,768 | 101,565 | 1.17% | 1,702 | 64 | City |
| Blue Springs | 4 | 62,252 | 58,766 | 1.01% | 2,799 | 22 | City |
| Raytown | 5 | 29,001 | 29,838 | -0.52% | 2,920 | 10 | City |
| Grandview | 6 | 26,698 | 26,533 | 0.17% | 1,813 | 15 | City |
| Grain Valley | 7 | 17,208 | 15,677 | 1.77% | 2,793 | 6 | City |
| Oak Grove | 8 | 9,604 | 8,192 | 2.5% | 1,498 | 6 | City |
| Greenwood | 9 | 6,370 | 6,028 | 0.87% | 1,221 | 5 | City |
| Sugar Creek | 10 | 3,189 | 3,298 | -0.62% | 289 | 11 | City |
| Buckner | 11 | 2,880 | 2,941 | -0.38% | 1,613 | 2 | City |
| Lake Lotawana | 12 | 2,841 | 2,310 | 3.08% | 276 | 10 | City |
| Lone Jack | 13 | 1,968 | 1,531 | 3.8% | 332 | 6 | City |
| Lake Tapawingo | 14 | 780 | 790 | -0.26% | 2,438 | 0 | City |
| Sibley | 15 | 325 | 317 | 0.31% | 312 | 1 | Village |
| Levasy | 16 | 71 | 74 | -1.39% | 118 | 1 | City |
| Unity Village | 17 | 61 | 63 | -1.61% | 42 | 1 | Village |
| River Bend | 18 | 5 | 5 | 0% | 3.0 | 2 | Village |
Kansas City is the largest city in Jackson County, with a population of 523,322.
River Bend is the smallest city in Jackson County, with a population of 5.
There are 18 cities in Jackson County, Missouri.