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 |
|---|---|---|---|---|---|---|---|
| San Luis Obispo | 1 | 49,928 | 47,191 | 1.39% | 3,707 | 13.5 | City |
| Orcutt | 2 | 31,509 | 31,353 | 0.59% | 2,912 | 10.8 | CDP |
| El Paso Robles (Paso Robles) | 3 | 31,017 | 31,484 | -0.38% | 1,557 | 19.9 | City |
| Atascadero | 4 | 29,685 | 29,744 | -0.05% | 1,139 | 26.1 | City |
| Nipomo | 5 | 18,225 | 18,182 | 0.6% | 1,209 | 15.1 | CDP |
| Arroyo Grande | 6 | 18,178 | 18,438 | -0.36% | 3,061 | 5.9 | City |
| Los Osos | 7 | 15,731 | 16,174 | 0.67% | 1,233 | 12.8 | CDP |
| Grover Beach | 8 | 12,495 | 12,701 | -0.41% | 5,404 | 2.3 | City |
| Morro Bay | 9 | 10,531 | 10,762 | -0.55% | 1,973 | 5.3 | City |
| Templeton | 10 | 8,771 | 7,965 | 0.91% | 1,109 | 7.9 | CDP |
| California Polytechnic State University | 11 | 8,147 | 7,713 | 7.69% | 5,297 | 1.5 | CDP |
| Pismo Beach | 12 | 7,909 | 8,063 | -0.49% | 2,262 | 3.5 | City |
| Oceano | 13 | 7,287 | 7,601 | 0% | 4,744 | 1.5 | CDP |
| Cambria | 14 | 5,790 | 5,555 | -0.31% | 688 | 8.4 | CDP |
| San Miguel | 15 | 4,106 | 3,253 | 1.26% | 3,910 | 1.1 | CDP |
| San Miguel | 16 | 2,826 | 2,536 | 1.25% | 1,682 | 1.7 | CDP |
| Callender | 17 | 2,641 | 1,638 | 3.9% | 1,155 | 2.3 | CDP |
| Cayucos | 18 | 2,322 | 2,228 | -0.85% | 749 | 3.1 | CDP |
| Woodlands | 19 | 2,149 | 2,331 | 5.55% | 1,301 | 1.7 | CDP |
| Avila Beach | 20 | 1,594 | 1,455 | -0.19% | 262 | 6.1 | CDP |
| Los Ranchos | 21 | 1,587 | 1,675 | 0.51% | 549 | 2.9 | CDP |
| Shandon | 22 | 987 | 1,054 | -2.18% | 335 | 3.0 | CDP |
| Blacklake | 23 | 806 | 797 | -1.1% | 771 | 1.0 | CDP |
| Santa Margarita | 24 | 604 | 1,025 | -7.22% | 1,168 | 0.5 | CDP |
| Edna | 25 | 382 | 408 | 3.8% | 313 | 1.2 | CDP |
| Garden Farms | 26 | 367 | 418 | -0.54% | 336 | 1.1 | CDP |
| San Simeon | 27 | 281 | 550 | -4.42% | 353 | 0.8 | CDP |
| Sisquoc | 28 | 150 | 169 | -1.96% | 67 | 2.2 | CDP |
| Los Berros | 29 | 106 | 301 | -26.39% | 42 | 2.5 | CDP |
| Garey | 30 | 61 | 47 | 8.93% | 48 | 1.3 | CDP |
| Cuyama | 31 | 10 | 11 | 0% | 22 | 0.5 | 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.
San Luis Obispo is the largest city in San Luis Obispo County.
Cuyama is the smallest city in San Luis Obispo County.
There are 31 cities in San Luis Obispo County, California.