Population: 1.6 million. In the catchment area of the city live about 3 million people.
City area: about 101 km²
Population density: approx. 16,000 inhabitants / km². The city district with the largest area (21.50 km²) is Sants-Montjuïc, the district with the largest population is Eixample with 266,000 inhabitants.
Number of visitors in 2012: more than 7.5 Mio. This is an increase of 135% compared with 2000.
Expenditure per capita per day by nation (2012):
Height (City Hall): 13 m
Languages: Catalan (català) and Castilian (castellano)
95% of the residents understand Catalan and 75% speak the language actively.
Number of banks: 2027 (in 2005)
Private water consumption: 71 million m³ (2005)
Gross domestic product: € 57 billion EUR (2006)
Hotels: 328
Nights: 14 million
Passengers airport Barcelona: 29,20 million
Passengers airport Girona: 4,90 million
Passengers airport Reus: 1,40 million
Passengers harbour (all): 2,40 million
Cruise ships: 841
The Barcelona harbour has the most passengers in Europ.
Arrival: 76% of visitors arrive by plan, by train 11%, 8% by car and 4% by bus.
Restaurants: 70% of visits were in traditional restaurants, 12% in restaurants with an international cuisine, and 8% in bars and cafes.
Note: with the Barcelona Restaurant Card you get 10% discount in more than 100 restaurants.
Ranking of the world's best restaurants: 5th place (source: 2009 Anholt-Gfk Roper City Brands Index).
Visitors of fairs: 1,12 million
Number of museums: 66
Parks and garden: 69
Payment: 24.30% of all payments made by credit card.
Number of stores: about 35,000
Beach Length: 4 km sandy beach
Modernisme: more than 2,000 buildings of the Modernisme (Catalan Art Nouveau) are registered in Catalonia.
State of the figures: 2010, unless otherwise indicated

Also Gaudí had a sense of numbers, but rather more with a mystical background.