Szigethalom's 2026 population is now estimated at 18,635. In 1980, the population of Szigethalom was 9,131. Szigethalom has grown by 253 in the last year, which represents a 1.38% annual change. These population values and projections come from Hungary historical city/town census values 1980 and 1990 via CityPopulation fallback access, Hungary Census 2022 API (WBS003) settlement population (2001, 2011, 2022), Hungary city/town 2025 official estimate via CityPopulation fallback access and World Population Review Internal Projections .