Zoetermeer is a city in the Western Netherlands, in the province of South Holland. The municipality covers an area of 37.05 km2 (14.31 sq mi) of which 2.60 km2 (1.00 sq mi) is water. A small village until the late 1960s, it had 6,392 inhabitants in 1950. By 2023 this had grown to 126.998, making it the fourth largest population centre in the province of South Holland, after Rotterdam, The Hague and Leiden. While now a city in its own right, Zoetermeer started out as a suburb of The Hague and is still a part of the Greater The Hague urban area.

South Holland is a province of the Netherlands with a population of over 3.8 million as of January 2023 and a population density of about 1,410/km2 (3,700/sq mi), making it the country's most populous province and one of the world's most densely populated areas. Situated on the North Sea in the west of the Netherlands, South Holland covers an area of 3,308 km2 (1,277 sq mi), of which 609 km2 (235 sq mi) is water. It borders North Holland to the north, Utrecht and Gelderland to the east, and North Brabant and Zeeland to the south. The provincial capital is the Dutch seat of government The Hague, while its largest city is Rotterdam. The Rhine-Meuse-Scheldt delta drains through South Holland into the North Sea. Europe's busiest seaport, the Port of Rotterdam, is located in South Holland.