Jacksonville is situated on the Atlantic coast of northeast Florida. It is the most populous city in the of Florida measured by the number of residents. But Jacksonville covers an enormous area, and is in fact the largest city in area in the continental United States. The city has a large area, but also has a low density rate. The metropolitan area extends beyond Duval County into Nassau, St. Johns, Baker and Clay counties and has a population of more than 1.25 million people. The city's metropolitan population is not the largest in Florida, it is exceeded by the Miami-Fort Lauderdale area, Tampa, and Orlando metro areas.
Jacksonville is widely known as a hard-working, blue-collar city. While a substantial portion of Jacksonville's economy is supported by both of its large U.S. Navy bases (Naval Air Station Jacksonville and Naval Station Mayport), it is also a hotbed for the banking, logistics, insurance, and healthcare sectors. The downtown skyline, notable for its bridges of various styles and colors, spans along the St. Johns River with a pedestrian river walk located on each bank. Although the bulk of Jacksonville's population is suburban in nature and spread throughout Duval County, renewed development efforts are currently underway in the urban core along with preservation efforts in its historic districts. Jacksonville is nicknamed JAX, or 'The Bold City'