 The population density was 75.8 inhabitants per square kilometre, and the overall life expectancy in Croatia at birth was 75.7 years.The country is inhabited mostly by Croats (89.6%), while minorities include Serbs (4.5%), and 21 other ethnicities (less than 1% each) recognised by the constitution.Since the counties were re-established in 1992, Croatia is divided into 20 counties and the capital city of Zagreb.