48 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Anaheim | 1 | 336,414 | 346,658 | -0.6% | 6,690 | 50.28 | City |
| Irvine | 2 | 318,761 | 308,411 | 0.65% | 4,858 | 65.61 | City |
| Santa Ana | 3 | 310,069 | 311,244 | -0.08% | 11,326 | 27.38 | City |
| Huntington Beach | 4 | 187,945 | 198,405 | -1.1% | 6,966 | 26.98 | City |
| Garden Grove | 5 | 165,814 | 171,863 | -0.72% | 9,236 | 17.95 | City |
| Orange | 6 | 137,594 | 139,451 | -0.27% | 5,361 | 25.67 | City |
| Fullerton | 7 | 136,572 | 143,267 | -0.97% | 6,092 | 22.42 | City |
| Costa Mesa | 8 | 106,069 | 111,781 | -1.06% | 6,711 | 15.81 | City |
| Mission Viejo | 9 | 88,735 | 93,457 | -1.05% | 5,025 | 17.66 | City |
| Westminster | 10 | 87,301 | 90,871 | -0.81% | 8,696 | 10.04 | City |
| Lake Forest | 11 | 85,782 | 85,927 | -0.03% | 5,132 | 16.71 | City |
| Newport Beach | 12 | 80,952 | 85,164 | -1.03% | 3,402 | 23.80 | City |
| Buena Park | 13 | 80,690 | 83,859 | -0.78% | 7,665 | 10.53 | City |
| Tustin | 14 | 76,238 | 79,902 | -0.95% | 6,854 | 11.12 | City |
| Yorba Linda | 15 | 64,763 | 68,223 | -1.06% | 3,246 | 19.95 | City |
| Laguna Niguel | 16 | 61,807 | 64,536 | -0.88% | 4,194 | 14.74 | City |
| San Clemente | 17 | 61,046 | 64,213 | -1.03% | 3,326 | 18.36 | City |
| La Habra | 18 | 59,650 | 63,002 | -1.11% | 7,891 | 7.56 | City |
| Fountain Valley | 19 | 54,464 | 56,973 | -0.91% | 6,004 | 9.07 | City |
| Placentia | 20 | 51,872 | 52,671 | -0.31% | 7,705 | 6.73 | City |
| Brea | 21 | 49,300 | 47,247 | 0.84% | 3,898 | 12.65 | City |
| Aliso Viejo | 22 | 49,056 | 52,073 | -1.21% | 7,083 | 6.93 | City |
| Cypress | 23 | 47,938 | 50,047 | -0.87% | 7,248 | 6.61 | City |
| Rancho Santa Margarita | 24 | 45,057 | 47,869 | -1.23% | 3,485 | 12.93 | City |
| Stanton | 25 | 39,293 | 38,097 | 0.61% | 12,663 | 3.10 | City |
| Temescal Valley | 26 | 35,284 | 28,420 | 7.14% | 1,825 | 19.34 | CDP |
| San Juan Capistrano | 27 | 34,484 | 35,159 | -0.39% | 2,390 | 14.43 | City |
| Dana Point | 28 | 32,240 | 33,057 | -0.5% | 4,971 | 6.49 | City |
| Laguna Hills | 29 | 29,531 | 31,311 | -1.19% | 4,510 | 6.55 | City |
| North Tustin | 30 | 25,184 | 25,147 | 0.07% | 3,827 | 6.58 | CDP |
| Ladera Ranch | 31 | 24,659 | 24,996 | 0.46% | 4,987 | 4.95 | CDP |
| Seal Beach | 32 | 23,793 | 25,190 | -1.16% | 2,105 | 11.30 | City |
| Laguna Beach | 33 | 21,888 | 22,997 | -1% | 2,461 | 8.89 | City |
| Laguna Woods | 34 | 16,585 | 17,617 | -1.23% | 4,963 | 3.34 | City |
| Coto Caza | 35 | 15,824 | 15,509 | 0.41% | 2,029 | 7.80 | CDP |
| La Palma | 36 | 14,675 | 15,560 | -1.19% | 8,240 | 1.78 | City |
| Rancho Mission Viejo | 37 | 13,371 | 7,816 | 7.14% | 354 | 37.81 | CDP |
| Rossmoor | 38 | 12,117 | 11,923 | 1.04% | 7,772 | 1.56 | CDP |
| Los Alamitos | 39 | 11,988 | 11,770 | 0.37% | 2,991 | 4.01 | City |
| Lakeland Village | 40 | 10,321 | 12,362 | -0.78% | 1,177 | 8.77 | CDP |
| Midway City | 41 | 7,919 | 8,681 | -0.46% | 13,003 | 0.61 | CDP |
| Las Flores | 42 | 5,704 | 5,089 | -0.3% | 2,265 | 2.52 | CDP |
| Villa Park | 43 | 5,555 | 5,827 | -0.96% | 2,675 | 2.08 | City |
| Warm Springs | 44 | 1,676 | 1,445 | -3.84% | 1,196 | 1.40 | CDP |
| Trabuco Canyon | 45 | 1,594 | 1,281 | 7.12% | 219 | 7.28 | CDP |
| Silverado | 46 | 1,098 | 740 | 7.23% | 192 | 5.72 | CDP |
| Modjeska | 47 | 945 | 834 | 7.14% | 472 | 2 | CDP |
| Williams Canyon | 48 | 45 | 108 | 7.14% | 80 | 0.57 | CDP |
Anaheim is the largest city in Orange County, with a population of 336,414.
Williams Canyon is the smallest city in Orange County.
There are 48 cities in Orange County, California.