As of 2020, Jacksonville is Florida's most populated city and the biggest city by area in the contiguous United States. It is the county seat of Duval County, which merged with the municipal administration in 1968. Consolidation gave Jacksonville its enormous size and brought the majority of the city's metropolitan population within its borders. Jacksonville was predicted to have a population of 929,647 people in 2021, making it the 13th most populated city in the United States, the most populous city in the Southeast, and the most populous city in the South outside of Texas. Jacksonville is the fourth biggest metropolitan area in Florida, with a population of 1,523,615 people.