Note: As defined by the US Census Bureau, a city's official boundaries often extend miles beyond the city itself and may even cross county lines. As such, several thousand US cities officially exist in two or more counties (and therefore appear on multiple counties' lists of cities.)
City | Rank | 2024 Pop. | 2020 Pop. | Change | Density (/mi²) | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Roseville | 1 | 162,674 | 148,516 | 2.22% | 3,690 | 44.1 | City |
| Rocklin | 2 | 74,038 | 71,772 | 0.77% | 3,737 | 19.8 | City |
| Lincoln | 3 | 56,060 | 49,970 | 2.79% | 2,319 | 24.2 | City |
| Granite Bay | 4 | 22,476 | 22,818 | 0.66% | 1,043 | 21.5 | CDP |
| Auburn | 5 | 13,617 | 13,780 | -0.3% | 1,897 | 7.2 | City |
| Loomis | 6 | 6,761 | 6,832 | -0.27% | 930 | 7.3 | Town |
| Meadow Vista | 7 | 3,651 | 3,508 | 0.86% | 691 | 5.3 | CDP |
| Kings Beach | 8 | 2,388 | 2,826 | -4.02% | 835 | 2.9 | CDP |
| Colfax | 9 | 2,069 | 1,991 | 0.93% | 1,472 | 1.4 | City |
| Newcastle | 10 | 1,547 | 1,360 | 1.51% | 647 | 2.4 | CDP |
| Sunnyside-Tahoe City | 11 | 1,532 | 1,576 | -0.13% | 440 | 3.5 | CDP |
| Sheridan | 12 | 1,424 | 1,120 | 0.99% | 56 | 25.5 | CDP |
| Dollar Point | 13 | 1,236 | 909 | 0.16% | 756 | 1.6 | CDP |
| Penryn | 14 | 1,159 | 878 | 2.11% | 609 | 1.9 | CDP |
| Foresthill | 15 | 1,127 | 1,545 | -2.25% | 101 | 11.2 | CDP |
| Tahoe Vista | 16 | 1,127 | 1,233 | -1.92% | 415 | 2.7 | CDP |
| Cedar Flat | 17 | 1,106 | 886 | 7.69% | 1,024 | 1.1 | CDP |
| Alta | 18 | 659 | 703 | 0.46% | 276 | 2.4 | CDP |
| Carnelian Bay | 19 | 536 | 565 | 0.19% | 413 | 1.3 | CDP |
| Dutch Flat | 20 | 95 | 133 | -4.04% | 160 | 0.6 | CDP |
Note: City markers shown outside the county boundary mean that a part of the city extends into this county, but is primarily located in an adjacent county.
Roseville is the largest city in Placer County.
Dutch Flat is the smallest city in Placer County.
There are 20 cities in Placer County, California.