The part of Croatia that is best known and most visited by tourists is the Dalmatian coast and its islands in the Adriatic Sea.
This region has a Mediterranean type of climate with mild winters and warm, sometimes even hot and sunny summers.
The population of Croatia in 2003 was estimated by the United Nations at 4,428,000, which placed it as number 115 in population among the 193 nations of the world. In that year approximately 13% of the population was over 65 years of age, with another 20% of the population under 15 years of age.
Croatia's rivers belong to the Adriatic and the Black Sea basin. The rivers in the interior are large and calmer (Sava, Drava, Danube).