Alytus's 2026 population is now estimated at 49,952. In 1989, the population of Alytus was 73,015. Alytus experienced a decrease of -543 residents over the past year, marking an annual decline of -1.08%. These population values and projections come from Lithuania city census rows via CityPopulation official attribution, Lithuania 2021 census city subset (direct official ArcGIS service), World Population Review Internal Projections and Lithuania city estimate rows via CityPopulation official attribution .