Today, the hamlet is a part of the municipality of the Westland. It is situated 1.6 km (0.99 mi) north of Naaldwijk, 6 km (3.7 mi) east of the beaches at Monster and Ter Heide, 2 km (1.2 mi) southwest of The Hague, 8 km (5.0 mi) west of Delft and 10 km (6.2 mi) northeast of Hook of Holland.
Mariëndijk is home to the pan European NGO, The Widow's Foundation, a philanthropic network supporting widows with multilingual and multidisciplinary expertise in medicine, law and finance.
Royal Flora Holland, the largest flower auction in the world, lies 1.5 km (0.93 mi) southwest of the hamlet.
In 2001, Mariëndijk had 173 inhabitants. The built-up area of the town was 0.019 km2 (4.7 acres), and contained 71 residences.[1]