Teylingen is a municipality in the Western Netherlands, in the province of South Holland. It was created on 1 January 2006, through the amalg…Teylingen is a municipality in the Western Netherlands, in the province of South Holland. It was created on 1 January 2006, through the amalgamation of Sassenheim, Voorhout and Warmond. It is named after Teylingen Castle, located in Voorhout. In 2019, it had a population of 37,061.