Krimpen aan den IJssel is a town and municipality in the western Netherlands, in the province of South Holland. The municipality had a population of 29,410 in 2021, and covers an area of 8.95 km2 (3.46 sq mi) of which 1.26 km2 (0.49 sq mi) is water.
The municipality is on the south shore of the river Hollandse IJssel. For many centuries, the only buildings in Krimpen were farm houses built along the river dike. They formed more or less autonomous communities along the dike.
In the 19th century, Krimpen began to grow as a suburb of Rotterdam. The town was connected to Rotterdam by rail in 1855, and by road in 1860. This led to a rapid increase in population, as people from Rotterdam moved to Krimpen in search of more affordable housing.
Today, Krimpen aan den IJssel is a thriving town with a mix of old and new. The town center is home to a number of historical buildings, including the 14th century Reformed Church. There are also a number of modern amenities, such as a shopping center, a theater, and a swimming pool.
Krimpen aan den IJssel is a popular destination for day trippers from Rotterdam. The town is known for its beautiful scenery, its historic center, and its family-friendly atmosphere.