Voorburg is a Dutch town and former municipality in the western part of the province of South Holland, the Netherlands. Together with Leidschendam and Stompwijk, it makes up the municipality Leidschendam-Voorburg. It has a population of approximately 39,000 people. It is considered to be the oldest city in The Netherlands and celebrated its 2000th year of existence in 1988. In 2002, the cities of Leidschendam and Voorburg were merged under the new city name "Leidschendam-Voorburg". Situated adjacent to the city of The Hague, it is often regarded as one of its suburbs.