Klasov (Hungarian: Kalász) is a village and municipality in the Nitra District in western central Slovakia, in the Nitra Region. In historical records the village was first mentioned in 1232. The municipality lies at an altitude of 180 metres (590 ft) and covers an area of 12.23 km2 (4.72 sq mi) (2025). It has a population of 1434 people (31 December 2025). The village has a public library and football pitch, and tennis pitch in Penzion Agroland. The records for genealogical research are available at the state archive "Statny Archiv in Nitra, Slovakia" More information...
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