7 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Crescent City | 1 | 6,128 | 6,531 | -1.3% | 3,122 | 2 | City |
| Bertsch-Oceanview | 2 | 2,168 | 2,037 | -0.82% | 411 | 5 | CDP |
| Fort Dick | 3 | 1,619 | 1,405 | 7.15% | 503 | 3 | CDP |
| Klamath | 4 | 960 | 970 | 1.27% | 56 | 17 | CDP |
| Smith River | 5 | 845 | 670 | -0.12% | 191 | 4 | CDP |
| Gasquet | 6 | 292 | 608 | -7.89% | 61 | 5 | CDP |
| Hiouchi | 7 | 101 | 266 | -11.4% | 174 | 1 | CDP |
Crescent City is the largest city in Del Norte County, with a population of 6,128.
Hiouchi is the smallest city in Del Norte County, with a population of 101.
There are 7 cities in Del Norte County, California.