58 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| San Diego | 1 | 1,409,359 | 1,384,824 | 0.35% | 4,322 | 326 | City |
| Chula Vista | 2 | 279,230 | 275,808 | 0.25% | 5,625 | 50 | City |
| Oceanside | 3 | 170,158 | 174,071 | -0.46% | 4,123 | 41 | City |
| Escondido | 4 | 148,297 | 151,045 | -0.37% | 3,971 | 37 | City |
| Carlsbad | 5 | 113,236 | 114,930 | -0.3% | 2,995 | 38 | City |
| El Cajon | 6 | 102,592 | 106,087 | -0.68% | 7,070 | 15 | City |
| Vista | 7 | 99,444 | 98,833 | 0.12% | 5,305 | 19 | City |
| San Marcos | 8 | 97,040 | 94,938 | 0.43% | 3,949 | 25 | City |
| Encinitas | 9 | 60,921 | 61,999 | -0.35% | 3,197 | 19 | City |
| La Mesa | 10 | 60,685 | 61,094 | -0.13% | 6,675 | 9 | City |
| Santee | 11 | 58,915 | 59,859 | -0.32% | 3,563 | 17 | City |
| National City | 12 | 57,706 | 61,476 | -1.29% | 7,853 | 7 | City |
| Poway | 13 | 49,597 | 48,785 | 0.33% | 1,269 | 39 | City |
| La Presa | 14 | 39,730 | 37,410 | 0.94% | 7,228 | 5 | CDP |
| Fallbrook | 15 | 34,504 | 32,359 | 0.77% | 1,967 | 18 | CDP |
| Spring Valley | 16 | 33,569 | 31,866 | 1.08% | 4,572 | 7 | CDP |
| Lemon Grove | 17 | 27,895 | 27,752 | 0.1% | 7,191 | 4 | City |
| Imperial Beach | 18 | 25,434 | 26,101 | -0.52% | 5,929 | 4 | City |
| Rancho San Diego | 19 | 22,735 | 21,476 | 0.45% | 2,614 | 9 | CDP |
| Ramona | 20 | 22,575 | 21,493 | 0.68% | 587 | 38 | CDP |
| Lakeside | 21 | 22,037 | 21,032 | 0.42% | 3,180 | 7 | CDP |
| Winter Gardens | 22 | 21,492 | 22,785 | 0.27% | 4,862 | 4 | CDP |
| Casa Oro-Mount Helix | 23 | 20,378 | 19,327 | 0.53% | 2,974 | 7 | CDP |
| Coronado | 24 | 17,493 | 20,180 | -2.98% | 2,241 | 8 | City |
| Bostonia | 25 | 17,218 | 17,532 | 0.72% | 8,940 | 2 | CDP |
| Alpine | 26 | 16,330 | 14,958 | 0.86% | 610 | 27 | CDP |
| Camp Pendleton South | 27 | 14,766 | 16,618 | 1.91% | 2,129 | 7 | CDP |
| Bonita | 28 | 13,707 | 12,470 | 0.57% | 2,732 | 5 | CDP |
| Solana Beach | 29 | 12,853 | 12,925 | -0.12% | 3,765 | 3 | City |
| Camp Pendleton Mainside | 30 | 11,999 | 7,424 | 7.14% | 1,116 | 11 | CDP |
| Valley Center | 31 | 11,342 | 11,320 | 1.23% | 413 | 27 | CDP |
| San Diego Country Estates | 32 | 10,274 | 9,752 | 0.11% | 612 | 17 | CDP |
| Eucalyptus Hills | 33 | 6,786 | 6,448 | 1.48% | 1,426 | 5 | CDP |
| Jamul | 34 | 5,982 | 5,776 | -0.2% | 355 | 17 | CDP |
| Granite Hills | 35 | 4,898 | 4,020 | 2.62% | 1,754 | 3 | CDP |
| Harbison Canyon | 36 | 4,211 | 4,355 | 0.6% | 418 | 10 | CDP |
| Bonsall | 37 | 4,168 | 4,194 | 0.29% | 306 | 14 | CDP |
| Lake San Marcos | 38 | 3,991 | 3,957 | -0.72% | 2,338 | 2 | CDP |
| Del Mar | 39 | 3,891 | 3,945 | -0.28% | 2,266 | 2 | City |
| Hidden Meadows | 40 | 3,751 | 3,675 | 0.46% | 569 | 7 | CDP |
| Campo | 41 | 3,664 | 3,536 | 1.81% | 156 | 24 | CDP |
| Crest | 42 | 3,326 | 2,721 | 1.5% | 509 | 7 | CDP |
| Rancho Santa Fe | 43 | 3,012 | 2,657 | -0.23% | 449 | 7 | CDP |
| Fairbanks Ranch | 44 | 2,981 | 2,929 | -0.37% | 585 | 5 | CDP |
| Borrego Springs | 45 | 2,825 | 1,864 | -1.43% | 65 | 43 | CDP |
| Harmony Grove | 46 | 2,549 | 1,494 | 7.15% | 827 | 3 | CDP |
| Pine Valley | 47 | 1,845 | 1,611 | 1.21% | 258 | 7 | CDP |
| Lakeside | 48 | 1,756 | 969 | 7.14% | 973 | 2 | CDP |
| Descanso | 49 | 1,426 | 1,398 | 0.07% | 74 | 19 | CDP |
| Julian | 50 | 1,346 | 1,318 | -0.74% | 171 | 8 | CDP |
| Pala | 51 | 1,235 | 1,094 | 7.11% | 221 | 6 | CDP |
| Jacumba | 52 | 931 | 579 | 2.76% | 152 | 6 | CDP |
| Spring Valley | 53 | 900 | 1,056 | 0.45% | 182 | 5 | CDP |
| Elfin Forest | 54 | 744 | 462 | 7.2% | 367 | 2 | CDP |
| Potrero | 55 | 472 | 250 | -2.48% | 150 | 3 | CDP |
| Boulevard | 56 | 370 | 453 | 1.09% | 95 | 4 | CDP |
| Del Dios | 57 | 315 | 302 | 7.14% | 768 | 0 | CDP |
| Mount Laguna | 58 | 130 | 102 | 7.44% | 77 | 2 | CDP |
San Diego is the largest city in San Diego County, with a population of 1,409,359.
Mount Laguna is the smallest city in San Diego County, with a population of 130.
There are 58 cities in San Diego County, California.