28 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| East Quincy | 1 | 2,376 | 2,279 | -0.34% | 196 | 12.11 | CDP |
| Chester | 2 | 2,303 | 2,088 | 0.48% | 316 | 7.29 | CDP |
| Portola | 3 | 2,146 | 2,091 | 0.52% | 397 | 5.41 | City |
| Quincy | 4 | 1,278 | 1,706 | -2.29% | 303 | 4.22 | CDP |
| Greenville | 5 | 599 | 785 | -5.52% | 75 | 7.99 | CDP |
| Sierra Brooks | 6 | 509 | 441 | 0.39% | 372 | 1.37 | CDP |
| Plumas Eureka | 7 | 470 | 358 | 1.73% | 118 | 3.98 | CDP |
| Beckwourth | 8 | 463 | 388 | 0.43% | 40 | 11.68 | CDP |
| Iron Horse | 9 | 448 | 290 | 2.28% | 58 | 7.74 | CDP |
| Cromberg | 10 | 436 | 312 | 2.83% | 48 | 9.03 | CDP |
| Meadow Valley | 11 | 426 | 478 | -0.7% | 50 | 8.52 | CDP |
| Twain | 12 | 399 | 303 | 7.26% | 55 | 7.19 | CDP |
| Lake Almanor West | 13 | 335 | 329 | 1.21% | 147 | 2.29 | CDP |
| Graeagle | 14 | 317 | 552 | -8.12% | 29 | 11.07 | CDP |
| Delleker | 15 | 303 | 601 | -7.9% | 110 | 2.77 | CDP |
| Mabie | 16 | 225 | 72 | 2.27% | 62 | 3.64 | CDP |
| Clio | 17 | 181 | 184 | 7.1% | 309 | 0.58 | CDP |
| Greenhorn | 18 | 159 | 202 | -3.05% | 24 | 6.71 | CDP |
| Lake Davis | 19 | 131 | 91 | 7.38% | 24 | 5.44 | CDP |
| Gold Mountain | 20 | 121 | 75 | 7.08% | 20 | 6.09 | CDP |
| Keddie | 21 | 84 | 68 | 7.69% | 128 | 0.66 | CDP |
| C-Road | 22 | 79 | 90 | -5.95% | 30 | 2.66 | CDP |
| La Porte | 23 | 65 | 0 | 6.56% | 15 | 4.46 | CDP |
| Prattville | 24 | 49 | 27 | 6.52% | 81 | 0.60 | CDP |
| Whitehawk | 25 | 48 | 37 | -7.69% | 19 | 2.58 | CDP |
| Bucks Lake | 26 | 24 | 21 | 9.09% | 2 | 10.34 | CDP |
| Valley Ranch | 27 | 24 | 38 | -20% | 21 | 1.14 | CDP |
| Canyondam | 28 | 5 | 0 | 0% | 7 | 0.77 | CDP |
East Quincy is the largest city in Plumas County, with a population of 2,376.
Canyondam is the smallest city in Plumas County.
There are 28 cities in Plumas County, California.