23 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Parsons | 1 | 9,206 | 9,595 | -0.84% | 866 | 11 | City |
| Oswego | 2 | 1,616 | 1,668 | -0.62% | 672 | 2 | City |
| Mount Pleasant | 3 | 1,266 | 1,291 | 0.16% | 35 | 36 | Township |
| Altamont | 4 | 1,032 | 1,069 | -0.67% | 524 | 2 | City |
| Osage | 5 | 972 | 991 | 0.21% | 16 | 61 | Township |
| Chetopa | 6 | 896 | 933 | -0.78% | 657 | 1 | City |
| Chetopa | 7 | 786 | 822 | -0.88% | 16 | 48 | Township |
| Elm Grove | 8 | 717 | 727 | 0.28% | 14 | 50 | Township |
| Mound Valley | 9 | 680 | 686 | 0.29% | 11 | 64 | Township |
| North | 10 | 584 | 589 | 0.34% | 19 | 31 | Township |
| Hackberry | 11 | 404 | 408 | 0.5% | 8 | 50 | Township |
| Labette | 12 | 379 | 384 | 0.26% | 10 | 36 | Township |
| Edna | 13 | 377 | 389 | -0.53% | 957 | 0 | City |
| Mound Valley | 14 | 345 | 350 | -0.29% | 537 | 1 | City |
| Oswego | 15 | 341 | 338 | 0.89% | 14 | 25 | Township |
| Richland | 16 | 302 | 309 | 0% | 8 | 37 | Township |
| Dennis | 17 | 210 | 222 | 7.14% | 139 | 2 | CDP |
| Canada | 18 | 199 | 201 | 0.51% | 5 | 40 | Township |
| Montana | 19 | 162 | 166 | 0% | 6 | 27 | Township |
| Neosho | 20 | 161 | 162 | 0.63% | 6 | 27 | Township |
| Chetopa | 21 | 142 | 150 | -2.07% | 4 | 36 | Township |
| Bartlett | 22 | 69 | 71 | 0% | 519 | 0 | City |
| South Mound | 23 | 35 | 27 | 6.06% | 35 | 1 | CDP |
Parsons is the largest city in Labette County, with a population of 9,206.
South Mound is the smallest city in Labette County, with a population of 35.
There are 23 cities in Labette County, Kansas.