Ciudad Constitución is a city in the Mexican state of Baja California Sur. It is the seat of the municipality of Comondú and is located 210 kilometers north of La Paz, Baja California Sur, and 147 kilometers south of Loreto, Baja California Sur. As of 2010, the city had a total population of 40,935. It is the fifth-largest community in the state (behind La Paz, San José del Cabo, Cabo San Lucas, and Colonia del Sol). Ciudad Constitución is a small city which serves as a gateway to Magdalena Bay.