Jacksonvilleis the largest city by population in the U.S. state ofFlorida, the12th most populouscity in theUnited States and thelargest city by areain thecontiguous United States.It is thecounty seatofDuval County,with which the city governmentconsolidatedin 1968.
Jacksonville is in theFirst Coastregion of northeast Florida and is centered on the banks of theSt. Johns River, about 25 miles (40km) south of theGeorgiastate line and about 340 miles (550km) north ofMiami. TheJacksonville Beaches communities are along the adjacentAtlanticcoast.Its riverine location facilitates twoUnited States Navybases and thePort of Jacksonville, Florida's third largestseaport.Significant factors in the local economy includeservicessuch as banking, insurance,healthcareandlogistics.A regional business center, it also has many museums and cultural offerings.