Newark Liberty International Airport in the context of "U.S. Routes 1 and 9"

North Jersey, also known as Northern New Jersey, comprises the northern portions of the U.S. state of New Jersey between the upper Delaware River and the Atlantic Ocean. As a distinct toponym, North Jersey is a colloquial one rather than an administrative one, reflecting geographical and perceived cultural and other differences between it and the southern part of the state.

North Jersey is characterized by its position, both geographically and culturally, within the greater New York City metropolitan area, as well as its high economic output, including its regional economic engines of Paramus in Bergen County, which had $6 billion in annual retail sales as of 2018 and Jersey City, whose financial district has been nicknamed "Wall Street West", Newark Liberty International Airport in Newark, and Port Newark–Elizabeth Marine Terminal.

Newark (/ˈnuːərk/ NEW-ərk, locally /nʊərk/) is the most populous city in the U.S. state of New Jersey (and the North Jersey region), the county seat of Essex County, and a principal city of the New York metropolitan area. As of the 2020 census, the city's population was 311,549. The Population Estimates Program calculated a population of 317,303 for 2024, making it the 64th-most populous municipality in the nation.

Settled in 1666 by Puritans from New Haven Colony, Newark is one of the oldest cities in the United States. Its location at the mouth of the Passaic River, where it flows into Newark Bay, has made the city's waterfront an integral part of the Port of New York and New Jersey. Port Newark–Elizabeth is the primary container shipping terminal of the busiest seaport on the U.S. East Coast. Newark Liberty International Airport was the first municipal commercial airport in the United States and has become one of the busiest.

LaGuardia Airport (IATA: LGA, ICAO: KLGA, FAA LID: LGA), colloquially known as LaGuardia or LGA, is a civil airport in East Elmhurst, Queens, New York City, United States, situated on the northwestern shore of Long Island, bordering Flushing Bay. Covering 680 acres (280 hectares) as of July 1, 2025, the facility was established in 1929, and began operating as a public airport in 1939. It is named after Fiorello H. La Guardia, a former mayor of New York City.

The airport accommodates airline service primarily to domestic, but also to limited international destinations. As of 2023, it was the third-busiest airport in the New York metropolitan area behind Kennedy and Newark airports, and the 19th-busiest in the United States by passenger volume. The airport is located directly to the north of the Grand Central Parkway, the airport's primary access highway. While the airport is a hub for both American Airlines and Delta Air Lines, commercial service is strictly governed by unique regulations including a curfew, a slot system, and a "perimeter rule" prohibiting most nonstop flights to or from destinations greater than 1,500 mi (2,400 km).

Port Newark–Elizabeth Marine Terminal, a major component of the Port of New York and New Jersey, is the principal container ship facility for goods entering and leaving the New York metropolitan area and the northeastern quadrant of North America.

Located on Newark Bay, the facility is run by the Port Authority of New York and New Jersey. Its two components, Port Newark and the Elizabeth Marine Terminal (sometimes called Port Elizabeth) sit side by side within the cities of Newark and Elizabeth, New Jersey, just east of the New Jersey Turnpike and Newark Liberty International Airport.

The Port Authority of New York and New Jersey, (PANYNJ; stylized, in logo since 2020, as Port Authority NY NJ) is a joint venture between the U.S. states of New York and New Jersey, established in 1921 through an interstate compact authorized by the United States Congress. The Port Authority oversees much of the regional transportation infrastructure, including bridges, tunnels, airports, and seaports, within the geographical jurisdiction of the Port of New York and New Jersey. This 1,500-square-mile (3,900 km) port district is generally encompassed within a 25-mile (40 km) radius of the Statue of Liberty National Monument. The Port Authority is headquartered at 4 World Trade Center in Lower Manhattan.

The Port Authority operates the Port Newark–Elizabeth Marine Terminal, which consistently ranks among the largest ports in the United States by tonnage handled, and the largest on the Eastern Seaboard. The Port Authority also operates six bi-state crossings: three connecting New Jersey with Manhattan, and three connecting New Jersey with Staten Island. The Port Authority Bus Terminal and the PATH rail system are also run by the Port Authority, as well as LaGuardia Airport, John F. Kennedy International Airport, Newark Liberty International Airport, Teterboro Airport, and Stewart International Airport. The agency has its own 2,100 member Port Authority Police Department.

Shanksville is a borough in Somerset County, Pennsylvania, United States. It has a population of 199 as of the 2020 U.S. census. It is part of the Somerset, Pennsylvania Micropolitan Statistical Area and is located 78 miles (126 km) southeast of Pittsburgh and 226 miles (364 km) west of Philadelphia.

Shanksville garnered global attention during the September 11 attacks when United Airlines Flight 93, bound from Newark, New Jersey, for San Francisco, crashed in adjacent Stonycreek Township after its passengers rebelled against the flight's al-Qaeda terrorist hijackers. It was the only one of the four hijacked planes that failed to reach the terrorists' intended target.

The Port Authority Trans-Hudson (PATH) is a 13.8-mile (22.2 km) rapid transit system in the northeastern United States. It serves the northeastern New Jersey cities of Newark, Harrison, Jersey City, and Hoboken, as well as Lower and Midtown Manhattan in New York City. The PATH is operated as a wholly owned subsidiary of the Port Authority of New York and New Jersey. Trains run around the clock year-round; four routes serving 13 stations operate during the daytime on weekdays, while two routes operate during weekends, late nights, and holidays. The PATH crosses the Hudson River through cast iron tunnels that rest on a bed of silt on the river bottom. It operates as a deep-level subway in Manhattan and the Jersey City/Hoboken riverfront; from Grove Street in Jersey City to Newark, trains run in open cuts, at grade level, and on elevated track. In 2024, the system saw 62,489,400 rides, or about 216,000 per weekday in the third quarter of 2025, making it the fifth-busiest rapid transit system in the United States.

The routes of the PATH system were originally operated by the Hudson & Manhattan Railroad (H&M), built to link New Jersey's Hudson Waterfront with New York City. The system began operations in 1908 and was fully completed in 1911. Three stations have since closed; two others were relocated after a re-alignment of the western terminus. From the 1920s, the rise of automobile travel and the concurrent construction of bridges and tunnels across the river sent the H&M into a financial decline during the Great Depression, from which it never recovered, and it was forced into bankruptcy in 1954. As part of the deal that cleared the way for the construction of the original World Trade Center, the Port Authority bought the H&M out of receivership in 1962 and renamed it PATH. In the 2000s and 2010s, the system suffered longstanding interruptions from disasters that affected the New York metropolitan area, most notably the September 11 attacks and Hurricane Sandy. Both private and public stakeholders have proposed expanding PATH service in New Jersey, and an extension to Newark Liberty International Airport may be constructed in the 2020s.