The city of Ilava has an area of 24.3 km2 and a population of 5,416. The population density is 223 inhabitants / km2. In terms of the development of the city area, the biggest changes took place in the seventies, when the villages of Iliavka and Klobušice were merged with Ilava (April 1, 1969). Therefore, currently the area of the city extends into two cadastral areas, ie. Ilava a k.ú. Klobušice.