Koolwijk, South Holland
Koolwijk is a hamlet in the Dutch province of South Holland. It is a part of the municipality of Krimpenerwaard, and lies about 7 km south of Gouda.
The statistical area "Koolwijk", which also can include the surrounding countryside, has a population of around 100.
Until 2015, Koolwijk was part of Vlist.
