11 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Omaha | 1 | 477,053 | 492,758 | -0.65% | 3,337 | 142.98 | City |
| Ralston | 2 | 6,345 | 6,484 | -0.44% | 3,883 | 1.63 | City |
| Valley | 3 | 3,360 | 3,049 | 1.88% | 693 | 4.85 | City |
| Bennington | 4 | 1,927 | 2,024 | -0.98% | 2,148 | 0.90 | City |
| Omaha township | 5 | 1,030 | 1,032 | 0.78% | 23 | 44.82 | Township |
| Waterloo | 6 | 894 | 938 | -1% | 1,112 | 0.80 | Village |
| Boys Town | 7 | 738 | 410 | 9.82% | 813 | 0.91 | Village |
| Elkhorn township | 8 | 323 | 340 | -0.92% | 10 | 30.77 | Township |
| Elkhorn township | 9 | 242 | 246 | -0.41% | 7 | 35.76 | Township |
| Valley township | 10 | 146 | 148 | 0% | 4 | 35.79 | Township |
| Venice | 11 | 32 | 45 | 6.67% | 68 | 0.47 | CDP |
Omaha is the largest city in Douglas County, with a population of 477,053.
Venice is the smallest city in Douglas County.
There are 11 cities in Douglas County, Nebraska.