5 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Orland | 1 | 8,670 | 8,343 | 0.76% | 2,892 | 3 | City |
| Willows | 2 | 6,030 | 6,273 | -0.81% | 2,126 | 3 | City |
| Hamilton City | 3 | 2,299 | 2,446 | 1.59% | 5,621 | 0 | CDP |
| Artois | 4 | 236 | 236 | -1.67% | 82 | 3 | CDP |
| Elk Creek | 5 | 15 | 175 | -40% | 10 | 1 | CDP |
Orland is the largest city in Glenn County, with a population of 8,670.
Elk Creek is the smallest city in Glenn County, with a population of 15.
There are 5 cities in Glenn County, California.