The Municipality of Athens (also City of Athens), which actually constitutes a small administrative unit of the entire city, had a population of 664,046 (in 2011) within its official limits, and a land area of . The Athens Urban Area or Greater Athens extends beyond its administrative municipal city limits, with a population of 3,090,508 (in 2011) over an area of . According to Eurostat in 2011, the functional urban area of Athens was the 9th most populous in the European Union (the 6th most populous capital city of the EU), with a population of 3.8 million people. Athens is also the southernmost capital on the European mainland and the warmest major city in Europe.