58 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| San Diego | 1 | 1,389,672 | 1,386,292 | 0.05% | 4,262 | 326.09 | City |
| Chula Vista | 2 | 273,349 | 275,809 | -0.18% | 5,507 | 49.64 | City |
| Oceanside | 3 | 167,390 | 173,965 | -0.78% | 4,056 | 41.27 | City |
| Escondido | 4 | 146,194 | 151,014 | -0.66% | 3,914 | 37.35 | City |
| Carlsbad | 5 | 112,542 | 114,924 | -0.42% | 2,976 | 37.81 | City |
| El Cajon | 6 | 100,935 | 106,075 | -1.01% | 6,956 | 14.51 | City |
| Vista | 7 | 98,234 | 98,508 | -0.06% | 5,240 | 18.75 | City |
| San Marcos | 8 | 93,747 | 94,849 | -0.23% | 3,815 | 24.57 | City |
| La Mesa | 9 | 60,163 | 61,097 | -0.31% | 6,617 | 9.09 | City |
| Encinitas | 10 | 60,070 | 61,997 | -0.64% | 3,152 | 19.06 | City |
| Santee | 11 | 59,220 | 59,864 | -0.22% | 3,581 | 16.54 | City |
| National City | 12 | 54,584 | 56,213 | -0.59% | 7,428 | 7.35 | City |
| Poway | 13 | 47,559 | 48,788 | -0.51% | 1,217 | 39.08 | City |
| La Presa | 14 | 39,730 | 37,410 | 0.94% | 7,228 | 5.50 | CDP |
| Fallbrook | 15 | 34,504 | 32,359 | 0.77% | 1,967 | 17.54 | CDP |
| Spring Valley | 16 | 33,569 | 31,866 | 1.08% | 4,572 | 7.34 | CDP |
| Lemon Grove | 17 | 27,547 | 27,602 | -0.04% | 7,102 | 3.88 | City |
| Imperial Beach | 18 | 25,028 | 26,102 | -0.85% | 5,834 | 4.29 | City |
| Rancho San Diego | 19 | 22,735 | 21,476 | 0.45% | 2,614 | 8.70 | CDP |
| Ramona | 20 | 22,575 | 21,493 | 0.68% | 587 | 38.44 | CDP |
| Lakeside | 21 | 22,037 | 21,032 | 0.42% | 3,180 | 6.93 | CDP |
| Winter Gardens | 22 | 21,492 | 22,785 | 0.27% | 4,862 | 4.42 | CDP |
| Casa Oro-Mount Helix | 23 | 20,378 | 19,327 | 0.53% | 2,974 | 6.85 | CDP |
| Coronado | 24 | 18,628 | 18,150 | 0.52% | 2,387 | 7.80 | City |
| Bostonia | 25 | 17,218 | 17,532 | 0.72% | 8,940 | 1.93 | CDP |
| Alpine | 26 | 16,330 | 14,958 | 0.86% | 610 | 26.79 | CDP |
| Camp Pendleton South | 27 | 14,766 | 16,618 | 1.91% | 2,129 | 6.94 | CDP |
| Bonita | 28 | 13,707 | 12,470 | 0.57% | 2,732 | 5.02 | CDP |
| Solana Beach | 29 | 12,507 | 12,927 | -0.67% | 3,663 | 3.41 | City |
| Camp Pendleton Mainside | 30 | 11,999 | 7,424 | 7.14% | 1,116 | 10.75 | CDP |
| Valley Center | 31 | 11,342 | 11,320 | 1.23% | 413 | 27.45 | CDP |
| San Diego Country Estates | 32 | 10,274 | 9,752 | 0.11% | 612 | 16.78 | CDP |
| Eucalyptus Hills | 33 | 6,786 | 6,448 | 1.48% | 1,426 | 4.76 | CDP |
| Jamul | 34 | 5,982 | 5,776 | -0.2% | 355 | 16.83 | CDP |
| Granite Hills | 35 | 4,898 | 4,020 | 2.62% | 1,754 | 2.79 | CDP |
| Harbison Canyon | 36 | 4,211 | 4,355 | 0.6% | 418 | 10.07 | CDP |
| Bonsall | 37 | 4,168 | 4,194 | 0.29% | 306 | 13.62 | CDP |
| Lake San Marcos | 38 | 3,991 | 3,957 | -0.72% | 2,338 | 1.71 | CDP |
| Del Mar | 39 | 3,815 | 3,945 | -0.68% | 2,222 | 1.72 | City |
| Hidden Meadows | 40 | 3,751 | 3,675 | 0.46% | 569 | 6.59 | CDP |
| Campo | 41 | 3,664 | 3,536 | 1.81% | 156 | 23.50 | CDP |
| Crest | 42 | 3,326 | 2,721 | 1.5% | 509 | 6.53 | CDP |
| Rancho Santa Fe | 43 | 3,012 | 2,657 | -0.23% | 449 | 6.71 | CDP |
| Fairbanks Ranch | 44 | 2,981 | 2,929 | -0.37% | 585 | 5.09 | CDP |
| Borrego Springs | 45 | 2,825 | 1,864 | -1.43% | 65 | 43.41 | CDP |
| Harmony Grove | 46 | 2,549 | 1,494 | 7.15% | 827 | 3.08 | CDP |
| Pine Valley | 47 | 1,845 | 1,611 | 1.21% | 258 | 7.16 | CDP |
| Lakeside | 48 | 1,756 | 969 | 7.14% | 973 | 1.80 | CDP |
| Descanso | 49 | 1,426 | 1,398 | 0.07% | 74 | 19.16 | CDP |
| Julian | 50 | 1,346 | 1,318 | -0.74% | 171 | 7.89 | CDP |
| Pala | 51 | 1,235 | 1,094 | 7.11% | 221 | 5.58 | CDP |
| Jacumba | 52 | 931 | 579 | 2.76% | 152 | 6.12 | CDP |
| Spring Valley | 53 | 900 | 1,056 | 0.45% | 182 | 4.93 | CDP |
| Elfin Forest | 54 | 744 | 462 | 7.2% | 367 | 2.02 | CDP |
| Potrero | 55 | 472 | 250 | -2.48% | 150 | 3.15 | CDP |
| Boulevard | 56 | 370 | 453 | 1.09% | 95 | 3.91 | CDP |
| Del Dios | 57 | 315 | 302 | 7.14% | 768 | 0.41 | CDP |
| Mount Laguna | 58 | 130 | 102 | 7.44% | 77 | 1.70 | CDP |
San Diego is the largest city in San Diego County, with a population of 1,389,672.
Mount Laguna is the smallest city in San Diego County.
There are 58 cities in San Diego County, California.