La Paz is the capital and largest city of the Mexican state of Baja California Sur, with a 2020 census population of 250,141 inhabitants, making it …La Paz is the capital and largest city of the Mexican state of Baja California Sur, with a 2020 census population of 250,141 inhabitants, making it the most populous city in the state. La Paz City is located in La Paz Municipality—the fourth-largest municipality in Mexico, by area and populace, covering an area of 20,275 km².