Cities, Towns, and Places of Orange County
| Aliso Viejo | Incorporated 2001 |
| Anaheim | |
| Brea | |
| Buena Park | |
| Cerritos | formerly Dairy Valley, now in LA County |
| Costa Mesa | formerly called Harper |
| Coto de Caza | unincorporated |
| Cypress | formerly Dairy City |
| Dairyland | renamed La Palma |
| Dairy City | renamed Cypress |
| Dairy Valley | renamed Cerritos |
| Dana Point | |
| El Toro | renamed Lake Forest |
| El Toro Station - now closed | Now under the supervision of the City of Irvine development of the "Great Park" to be completed in 2015. |
| Fountain Valley | |
| Fullerton | |
| Garden Grove | |
| Harper | renamed Costa Mesa |
| Huntington Beach | |
| Irvine | |
| La Habra | |
| La Palma | formerly Dairyland |
| Laguna Beach | |
| Laguna Hills | |
| Laguna Niguel | |
| Laguna Woods | formerly Leisure World, a senior citizens gated community. |
| Lake Forest | formerly El Toro |
| Los Alamitos | |
| Mission Viejo | |
| Newport Beach | |
| City of Orange | formerly Richland |
| County of Orange | |
| Placentia | |
| Portola Hills | |
| Rancho Santa Margarita | became Orange County's 33rd city on 1 Jan 2000 |
| Richland | became Orange |
| Rossmoor | unincorporated |
| San Clemente | |
| San Juan Capistrano | |
| Santa Ana | |
| Seal Beach | |
| Stanton | |
| Tustin | formerly Tusinville |
| Villa Park | |
| Westminster | |
| Yorba Linda |