New Jersey (ⁱ/nuː ˈdʒɜrzi/) is a state in the Northeastern and Middle Atlantic regions of the United States. It is bordered on the north and east by the U.S. state of New York, on the southeast and south by the Atlantic Ocean, on the west by Pennsylvania, and on the southwest by Delaware. New Jersey is the 4th least extensive, but the 11th most populous and the most densely populated of the 50 United States. New Jersey lies mostly within the sprawling metropolitan areas of New York City and Philadelphia. It is also the third wealthiest by 2009–2010 median household income.

The area was inhabited by Native Americans for more than 2,800 years, with historical tribes such as the Lenape along the coast. In the early 17th century, the Dutch and the Swedes made the first European settlements. The British later seized control of the region, naming it the Province of New Jersey. It was granted as a colony to Sir George Carteret and John Berkeley, 1st Baron Berkeley of Stratton. At this time, it was named after the largest of the British Channel Islands, Jersey, Carteret's birthplace. New Jersey was the site of several decisive battles during the American Revolutionary War.

Jersey, officially the Bailiwick of Jersey, French: Bailliage de Jersey ( /ˈdʒɜrzi/, French: [ʒɛʁzɛ]; Jèrriais: Jèrri), is a British Crown Dependency off the coast of Normandy, France. As well as the island of Jersey itself, the bailiwick includes two groups of small islands that are no longer permanently inhabited, the Minquiers and Écréhous, and the Pierres de Lecq and other rocks and reefs.

Jersey is a self-governing parliamentary democracy under a constitutional monarchy, with its own financial, legal and judicial systems.

The island of Jersey is the largest of the Channel Islands. Although the Bailiwicks of Jersey and Guernsey are often referred to collectively as 'the Channel Islands', they are not a constitutional or political unit. Jersey has a separate relationship to the British Crown from the other Crown Dependencies of Guernsey and the Isle of Man. It is not part of the United Kingdom, and has an international identity separate from that of the UK but the United Kingdom is constitutionally responsible for the defence of Jersey. Jersey is not a part of the European Union but has a special relationship with it, being treated as part of the European Community for the purposes of free trade in goods.