The total population in Slovakia was estimated at 5.5 million people in 2018, according to the latest census figures. Looking back, in the year of 1945, Slovakia had a population of 3.4 million people. The population of Slovakia represents 0.08 percent of the world´s total population which arguably means that one person in every 1282 people on the planet is a resident of Slovakia. This page provides – Slovakia Population – actual values, historical data, forecast, chart, statistics, economic calendar and news.