30 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Stockton | 1 | 318,587 | 320,976 | -0.15% | 5,049 | 63 | City |
| Tracy | 2 | 100,936 | 93,620 | 1.47% | 3,832 | 26 | City |
| Manteca | 3 | 95,759 | 84,009 | 2.52% | 4,471 | 21 | City |
| Lodi | 4 | 68,506 | 66,438 | 0.61% | 5,007 | 14 | City |
| Lathrop | 5 | 47,031 | 29,096 | 8.26% | 2,372 | 20 | City |
| Ripon | 6 | 16,036 | 16,116 | -0.1% | 3,011 | 5 | City |
| Garden Acres | 7 | 9,993 | 10,096 | -0.44% | 3,867 | 3 | CDP |
| Country Club | 8 | 9,763 | 9,242 | 0.27% | 5,093 | 2 | CDP |
| August | 9 | 9,264 | 8,046 | 0.63% | 7,376 | 1 | CDP |
| Escalon | 10 | 7,279 | 7,469 | -0.52% | 3,195 | 2 | City |
| Lincoln Village | 11 | 4,540 | 3,991 | 0.24% | 6,177 | 1 | CDP |
| Lockeford | 12 | 4,349 | 3,572 | 1.73% | 521 | 8 | CDP |
| French Camp | 13 | 3,981 | 3,641 | 1.01% | 1,287 | 3 | CDP |
| Woodbridge | 14 | 3,842 | 3,806 | -0.23% | 1,275 | 3 | CDP |
| Morada | 15 | 3,212 | 3,419 | -1.26% | 1,077 | 3 | CDP |
| Dogtown | 16 | 3,014 | 3,006 | 1.14% | 232 | 13 | CDP |
| Kennedy | 17 | 2,332 | 2,877 | -2.55% | 1,924 | 1 | CDP |
| East Oakdale | 18 | 2,286 | 2,370 | -1.38% | 424 | 5 | CDP |
| Collierville | 19 | 2,146 | 2,354 | 0.66% | 325 | 7 | CDP |
| Orange Blossom | 20 | 1,900 | 1,155 | 7.16% | 498 | 4 | CDP |
| Linden | 21 | 1,860 | 2,043 | 0.27% | 251 | 7 | CDP |
| Waterloo | 22 | 907 | 902 | 2.49% | 167 | 5 | CDP |
| Taft Mosswood | 23 | 851 | 1,060 | -5.02% | 1,830 | 0 | CDP |
| Thornton | 24 | 808 | 903 | -2.65% | 379 | 2 | CDP |
| Victor | 25 | 687 | 420 | 4.09% | 544 | 1 | CDP |
| Terminous | 26 | 395 | 400 | 0.25% | 404 | 1 | CDP |
| Valley Home | 27 | 250 | 209 | 0.4% | 217 | 1 | CDP |
| Acampo | 28 | 234 | 261 | -2.9% | 249 | 1 | CDP |
| Knights Ferry | 29 | 90 | 62 | 7.14% | 563 | 0 | CDP |
| Farmington | 30 | 87 | 169 | -8.42% | 34 | 3 | CDP |
Stockton is the largest city in San Joaquin County, with a population of 318,587.
Farmington is the smallest city in San Joaquin County, with a population of 87.
There are 30 cities in San Joaquin County, California.