11 cities
| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Lawrence | 1 | 98,437 | 94,939 | 0.6% | 2,848 | 35 | City |
| Eudora | 2 | 8,074 | 7,729 | 0.85% | 165 | 49 | Township |
| Palmyra | 3 | 8,045 | 7,608 | 0.92% | 99 | 81 | Township |
| Eudora | 4 | 6,638 | 6,415 | 0.56% | 1,980 | 3 | City |
| Baldwin City | 5 | 5,068 | 4,818 | 0.84% | 1,785 | 3 | City |
| Willow Springs | 6 | 1,624 | 1,512 | 1.31% | 30 | 54 | Township |
| Kanwaka | 7 | 1,525 | 1,432 | 0.99% | 36 | 42 | Township |
| Clinton | 8 | 669 | 620 | 1.52% | 21 | 31 | Township |
| Grant | 9 | 402 | 377 | 1.01% | 25 | 16 | Township |
| Lawrence | 10 | 119 | 132 | -3.25% | 3 | 36 | Township |
| Lawrence | 11 | 21 | 24 | -4.55% | 1 | 35 | Township |
Lawrence is the largest city in Douglas County, with a population of 98,437.
Lawrence is the smallest city in Douglas County, with a population of 21.
There are 11 cities in Douglas County, Kansas.