De Bilt is a municipality and town in the province of Utrecht, Netherlands. It had a population of 43,384 in 2021. De Bilt houses the headquarters of the Royal Netherlands Meteorological Institute (KNMI).

Utrecht, officially the Province of Utrecht, is a province of the Netherlands. It is located in the centre of the country, bordering the Eemmeer in the north-east, the province of Gelderland in the east and south-east, the province of South Holland in the west and south-west and the province of North Holland in the north-west and north. The province of Utrecht has a population of about 1,388,000 as of January 2023. With a land area of approximately 1,484 square kilometres (573 sq mi), it is the second smallest province in the country. Apart from its eponymous capital, major cities and towns in the province are Amersfoort, Houten, IJsselstein, Nieuwegein, Veenendaal and Zeist. The busiest railway station in the Netherlands, Utrecht Centraal, is located in the province of Utrecht.