| Tijuana | |
| Tijuana is on the Baja California Peninsula and center of the Tijuana metropolitan area, part of the international San Diego-Tijuana metropolitan area. Tijuana is the largest city in Baja California. Tijuana's 2021 population is now estimated at 2,181,104. Tijuana sits in a valley on the Tijuana River that boasts rugged and hilly terrain. | |