 The populations of Split and Rijeka exceed 100,000, and five more cities in Croatia have populations over 50,000.Croatia's territory covers , making it the 127th largest country in the world.The physical geography of Croatia is defined by its location—it is described as a part of Southeast Europe Croatia borders Bosnia–Herzegovina (for 1,009.1 km) and Serbia (for 317.6 km) in the east, Slovenia for 667.8 km in the west, Hungary for 355.5 km in the north and Montenegro for 22.6 km and the Adriatic Sea in the south.