London is the capital and largest city of England and the United Kingdom, with a population of just under 9 million. It stands on the River Thames in south-east England at the head of a 50-mile (80 km) estuary down to the North Sea and has been a major settlement for two millennia. The City of London, its ancient core and financial centre, was founded by the Romans as Londinium and retains its medieval boundaries. The City of Westminster, to the west of the City of London, has for centuries hosted the national government and parliament. Since the 19th century, the name "London" also refers to the metropolis around this core, historically split among the counties of Middlesex, Essex, Surrey, Kent, and Hertfordshire, which since 1965 has largely comprised Greater London, which is governed by 33 local authorities and the Greater London Authority.
Los Angeles, often referred to by its initials L.A., officially the City of Los Angeles, is the most populous city in the U.S. state of California. With roughly 3.9 million residents within the city limits as of 2020, Los Angeles is the second-most populous city in the United States, behind only New York City; it is the commercial, financial and cultural center of the Southern California region. Los Angeles has a Mediterranean climate, an ethnically and culturally diverse population, in addition to a sprawling metropolitan area.
Rome is the capital city of Italy. It is also the capital of the Lazio region, the centre of the Metropolitan City of Rome, and a special comune named Comune di Roma Capitale. With 2,860,009 residents in 1,285 km2 (496.1 sq mi), Rome is the country's most populated comune and the third most populous city in the European Union by population within city limits. The Metropolitan City of Rome, with a population of 4,355,725 residents, is the most populous metropolitan city in Italy. Its metropolitan area is the third-most populous within Italy. Rome is located in the central-western portion of the Italian Peninsula, within Lazio (Latium), along the shores of the Tiber. Vatican City is an independent country inside the city boundaries of Rome, the only existing example of a country within a city. Rome is often referred to as the City of Seven Hills due to its geographic location, and also as the "Eternal City". Rome is generally considered to be the "cradle of Western civilization and Christian culture", and the centre of the Catholic Church.
Brooklyn is a borough of New York City, coextensive with Kings County, located on the westernmost edge of Long Island in the U.S. state of New York. Kings County is the most populous county in the State of New York, and the second-most-densely-populated county in the United States, behind New York County (Manhattan). Brooklyn is also New York City's most populous borough, with 2,736,074 residents in 2020. If Brooklyn were an independent city, it would be the third most populous in the U.S. after the rest of New York City and Los Angeles, and ahead of Chicago.
New Orleans is a consolidated city-parish located along the Mississippi River in the southeastern region of the U.S. state of Louisiana. With a population of 383,997 according to the 2020 U.S. census, it is the most populous city in Louisiana, third most populous city in the Deep South, and the twelfth-most populous city in the southeastern United States. Serving as a major port, New Orleans is considered an economic and commercial hub for the broader Gulf Coast region of the United States. New Orleans is also a region of French Louisiana, along with the Cajun Country.
Miami, officially the City of Miami, is a coastal metropolis and the seat of Miami-Dade County in South Florida. With a population of 442,241 as of the 2020 census, it is the second-most populous city in the state of Florida after Jacksonville. It is the core of the much larger Miami metropolitan area, which, with a population of 6.14 million, is the third-largest metro in the Southeast and ninth-largest in the United States. The city has the third-largest skyline in the U.S. with over 300 high-rises, 58 of which exceed 491 ft (150 m).
In the United States, a metropolitan statistical area (MSA) is a geographical region with a relatively high population density at its core and close economic ties throughout the region. Such regions are not legally incorporated as a city or town would be and are not legal administrative divisions like counties or separate entities such as states. That makes the precise definition of any given metropolitan area vary with the source. The statistical criteria for a standard metropolitan area were defined in 1949 and redefined as a metropolitan statistical area in 1983.
Edmonton is the capital city of the Canadian province of Alberta. Edmonton is situated on the North Saskatchewan River and is the centre of the Edmonton Metropolitan Region, which is surrounded by Alberta's central region. The city anchors the northern end of what Statistics Canada defines as the "Calgary–Edmonton Corridor," a region spanning between Edmonton and the city of Calgary, which includes the many smaller municipalities between the two.
Population density is a measurement of population per unit land area. It is mostly applied to humans, but sometimes to other living organisms too. It is a key geographical term. In simple terms, population density refers to the number of people living in an area per square kilometre or other unit of land area
New York, often called New York City or NYC, is the most populous city in the United States. With a 2020 population of 8,804,190 distributed over 300.46 square miles (778.2 km2), the city is the most densely populated major city in the United States. NYC is more than twice as populous as Los Angeles, the nation's second-largest city. New York City is at the southern tip of New York State and is situated on one of the world's largest natural harbors. The city comprises five boroughs, each of which is coextensive with a respective county. The five boroughs, which were created in 1898 when local governments were consolidated into a single municipality, are: Brooklyn, Queens, Manhattan, the Bronx, and Staten Island. New York City is a global city and a cultural, financial, high-tech, entertainment, glamour, and media center with a significant influence on commerce, health care and scientific output in life sciences, research, technology, education, politics, tourism, dining, art, fashion, and sports. Home to the headquarters of the United Nations, New York is an important center for international diplomacy, and it is sometimes described as the world's most important city and the capital of the world.
An urban area, built-up area or urban agglomeration is a human settlement with a high population density and an infrastructure of built environment. This is the core of a metropolitan statistical area in the United States, if it contains a population of more than 50,000.
New York, sometimes called New York State, is a state in the Northeastern United States. A Mid-Atlantic state, New York borders New England, and has an international border with Canada. With almost 19.7 million residents, it is the fourth-most populous state in the United States and seventh-most densely populated as of 2022. New York is the 27th-largest U.S. state by area, with a total area of 54,556 square miles (141,300 km2).
Boston is the capital and largest city of the U.S. state of Massachusetts, and the cultural and financial center of New England in the Northeastern United States, with an area of 48.4 sq mi (125 km2) and a population of 675,647 in 2020. Greater Boston metropolitan statistical area is the eleventh-largest in the country.
London is a region of England which contains the ceremonial counties of Greater London and the City of London. Greater London is bordered by Hertfordshire to the north, Essex to the north-east, Kent to the south-east, Surrey to the south, and Berkshire and Buckinghamshire to the west. It completely surrounds the City of London.
