Indicator	Value
Total population	5,420,000–5,510,000 peopleUN DESA WPP [2024] 5,507,000 people·World Bank WDI [2024] 5,422,000 people
Median age	41.8 yearsUN DESA WPP [2024]
Life expectancy	78.3–78.4 yearsWorld Bank WDI [2024] 78.37 years·UNDP HDI [2023] 78.34 years
Ethnic groups	Slovak 83.8%, Hungarian 7.8%, Romani 1.2%, other 1.8% (includes Czech, Ruthenian, Ukrainian, Russian, German, Polish), unspecified 5.4% (2021 est.); note: data represent population by nationality; Romani populations are usually underestimated in official statistics and may represent 7–11% of Slovakia's populationCIA World Factbook [2025] · 2026 archive
Languages	Slovak (official) 81.8%, Hungarian 8.5%, Roma 1.8%, other 2.2%, unspecified 5.7% (2021 est.)CIA World Factbook [2025] · 2026 archive
Religions	Roman Catholic 55.8%, Evangelical Church of the Augsburg Confession 5.3%, Greek Catholic 4%, Reformed Christian 1.6%, other 3%, none 23.8%, unspecified 6.5% (2021 est.)CIA World Factbook [2025] · 2026 archive
Urbanization	54% of total population (2023)CIA World Factbook [2025] · 2026 archive
Population growth	-0.0861 %World Bank WDI [2024]
Birth rate	8.5 per 1,000World Bank WDI [2024]
Death rate	9.9 per 1,000World Bank WDI [2024]
Urban population	53.2 %World Bank WDI [2024]
Languages (structured)	Balkan Romani / Central Romani / Czech / German / Hungarian / Polish / Rusyn / Sinte-Manus Romani / Slovak / Slovakian Sign Language / Ukrainian / Vlax RomaniGlottolog [2026]