In 2024, Madrid was the city with the most inhabitants in Spain. In that year, more than 3.42 million people lived in the city. Barcelona was the second-largest city with 1.69 million residents.

In 2025, approximately 23 million people lived in the São Paulo metropolitan area, making it the biggest in Latin America and the Caribbean and the sixth most populated in the world. The homonymous state of São Paulo was also the most populous federal entity in the country. The second place for the region was Mexico City with 22.75 million inhabitants. Brazil's cities Brazil is home to two large metropolises, only counting the population within the city limits, São Paulo had approximately 11.45 million inhabitants, and Rio de Janeiro around 6.21 million inhabitants. It also contains a number of smaller, but well known cities such as Brasília, Salvador, Belo Horizonte and many others, which report between 2 and 3 million inhabitants each. As a result, the country's population is primarily urban, with nearly 88 percent of inhabitants living in cities. Mexico City Mexico City's metropolitan area ranks sevenths in the ranking of most populated cities in the world. Founded over the Aztec city of Tenochtitlan in 1521 after the Spanish conquest as the capital of the Viceroyalty of New Spain, the city still stands as one of the most important in Latin America. Nevertheless, the preeminent economic, political, and cultural position of Mexico City has not prevented the metropolis from suffering the problems affecting the rest of the country, namely, inequality and violence. Only in 2023, the city registered a crime incidence of 52,723 reported cases for every 100,000 inhabitants and around 24 percent of the population lived under the poverty line.

Spain ES: Population in Largest City: as % of Urban Population data was reported at 17.171 % in 2017. This records an increase from the previous number of 17.008 % for 2016. Spain ES: Population in Largest City: as % of Urban Population data is updated yearly, averaging 15.595 % from Dec 1960 (Median) to 2017, with 58 observations. The data reached an all-time high of 17.171 % in 2017 and a record low of 14.326 % in 1960. Spain ES: Population in Largest City: as % of Urban Population data remains active status in CEIC and is reported by World Bank. The data is categorized under Global Database’s Spain – Table ES.World Bank: Population and Urbanization Statistics. Population in largest city is the percentage of a country's urban population living in that country's largest metropolitan area.; ; United Nations, World Urbanization Prospects.; Weighted average;

In 2018, the urban public transport in the Madrid metropolitan area held the largest offer, amounting to approximately **** billion seat-kilometers. Barcelona and Valencia ranked second and third, respectively.

In 2018, the Madrid metropolitan area held the largest urban public transport traffic in Spain, amounting to approximately *** million vehicles-kilometer. Barcelona and Valencia ranked second and third, respectively.

Madrid was the largest city in Spain in 2024, with around *** million inhabitants. Barcelona followed second, with nearly *** million people residing there. The most populated city in the Spanish islands that year was Palma de Mallorca.

In 2018, the Barcelona metropolitan area held the largest number of urban bus operators, amounting to approximately ** private and public operators. Asturias and Madrid ranked second and third, respectively.

In 2025, Moscow was the largest city in Europe with an estimated urban agglomeration of 12.74 million people. The French capital, Paris, was the second largest city in 2025 at 11.35 million, followed by the capitals of the United Kingdom and Spain, with London at 9.84 million and Madrid at 6.81 million people. Istanbul, which would otherwise be the largest city in Europe in 2025, is excluded as it is only partially in Europe, with a sizeable part of its population living in Asia. Europe’s population is almost 750 million Since 1950, the population of Europe has increased by approximately 200 million people, increasing from 550 million to 750 million in these seventy years. Before the turn of the millennium, Europe was the second-most populated continent, before it was overtaken by Africa, which saw its population increase from 228 million in 1950 to 817 million by 2000. Asia has consistently had the largest population of the world’s continents and was estimated to have a population of 4.6 billion. Europe’s largest countries Including its territory in Asia, Russia is by far the largest country in the world, with a territory of around 17 million square kilometers, almost double that of the next largest country, Canada. Within Europe, Russia also has the continent's largest population at 145 million, followed by Germany at 83 million and the United Kingdom at almost 68 million. By contrast, Europe is also home to various micro-states such as San Marino, which has a population of just 30 thousand.

In 2018,, the Madrid metropolitan area held the largest number of tram stations, amounting to approximately ** tram stations. The Barcelona and Valencia metropolitan areas ranked second and third, respectively.

In 2018, the Madrid metropolitan area held the largest urban train fleet size with approximately *** thousand units. Barcelona and Valencia metropolitan areas ranked second and third, respectively.

In 2018, the Madrid metropolitan held the largest number of metro stations, with approximately *** subway stations. The Barcelona and Valencia metropolitan areas ranked second and third, respectively.

Throughout the early modern period, the largest city in Italy was Naples. The middle ages saw many metropolitan areas along the Mediterranean grow to become the largest in Europe, as they developed into meeting ports for merchants travelling between the three continents. Italy, throughout this time, was not a unified country, but rather a collection of smaller states that had many cultural similarities, and political control of these cities regularly shifted over the given period. Across this time, the population of each city generally grew between each century, but a series of plague outbreaks in the 1600s devastated the populations of Italy's metropolitan areas, which can be observed here. Naples At the beginning of the 1500s, the Kingdom of Naples was taken under the control of the Spanish crown, where its capital grew to become the largest city in the newly-expanding Spanish Empire. Prosperity then grew in the 16th and 17th centuries, before the city's international importance declined in the 18th century. There is also a noticeable dip in Naples' population size between 1600 and 1700, due to an outbreak of plague in 1656 that almost halved the population. Today, Naples is just the third largest city in Italy, behind Rome and Milan. Rome Over 2,000 years ago, Rome became the first city in the world to have a population of more than one million people, and in 2021, it was Italy's largest city with a population of 2.8 million; however it did go through a period of great decline in the middle ages. After the Fall of the Western Roman Empire in 476CE, Rome's population dropped rapidly, below 100,000 inhabitants in 500CE. 1,000 years later, Rome was an important city in Europe as it was the seat of the Catholic Church, and it had a powerful banking sector, but its population was just 55,000 people as it did not have the same appeal for merchants or migrants held by the other port cities. A series of reforms by the Papacy in the late-1500s then saw significant improvements to infrastructure, housing, and sanitation, and living standards rose greatly. Over the following centuries, the Papacy consolidated its power in the center of the Italian peninsula, which brought stability to the region, and the city of Rome became a cultural center. Across this period, Rome's population grew almost three times larger, which was the highest level of growth of these cities.

The company Bicing hosted ***** public rental bikes in Barcelona in 2018, making it the largest bike-sharing company in Spain at that time. Valencia had ***** rentals available, making it the second-most convenient city for bike sharing.

Madrid and Barcelona were the hotel markets receiving the largest share of investment among urban destinations in Spain in 2024. These Spanish cities accounted for nearly ** percent of that year's total. The average room transaction price of the Spanish hotel market was at *** thousand euros in 2024.

This statistic shows the number of passenger trips per capita in urban bus traffic in selected Spanish cities in 2017. In 2018, Pamplona held the largest number of passenger trips per capita in urban bus traffic, amounting to approximately *** trips per inhabitant. San Sebastian and Zaragoza ranked second and third, respectively.

The company Bicing hosted *** rental sites in Barcelona in 2018, making it the largest bike-sharing company in Spain at that time. Valencia and Sevilla also had well-established bike rental services, with over *** rental sites in each city.

The city of Paris in France had an estimated gross domestic product of 757.6 billion Euros in 2021, the most of any European city. Paris was followed by the spanish capital, Madrid, which had a GDP of 237.5 billion Euros, and the Irish capital, Dublin at 230 billion Euros. Milan, in the prosperous north of Italy, had a GDP of 228.4 billion Euros, 65 billion euros larger than the Italian capital Rome, and was the largest non-capital city in terms of GDP in Europe. The engine of Europe Among European countries, Germany had by far the largest economy, with a gross domestic product of over 4.18 trillion Euros. The United Kingdom or France have been Europe's second largest economy since the 1980s, depending on the year, with forecasts suggesting France will overtake the UK going into the 2020s. Germany however, has been the biggest European economy for some time, with five cities (Munich, Berlin, Hamburg, Stuttgart and Frankfurt) among the 15 largest European cities by GDP. Europe's largest cities In 2023, Moscow was the largest european city, with a population of nearly 12.7 million. Paris was the largest city in western Europe, with a population of over 11 million, while London was Europe's third-largest city at 9.6 million inhabitants.