ISI Contact Details

The ISI Permanent Office is located in the building of Statistics Netherlands (CBS) in The Hague-Leidschenveen, The Netherlands. To contact and locate the ISI, please find details given below.

Directions to the ISI Permanent Office:

By train

From Den Haag (The Hague) Central Station: Take the Randstadrail (tramway 3, 4 or E) to station Leidschenveen (direction Zoetermeer or Slinge/Rotterdam). Statistics Netherlands ("CBS", Henri Faasdreef 312) is located next to the station Leidschenveen. Cross the silver bridge to arrive at the main entrance.

From Utrecht: Take a train to Den Haag (The Hague) Centraal Station and from there take the Randstadrail (tramway 3, 4 or E) to station Leidschenveen (direction Zoetermeer or Slinge/Rotterdam). Statistics Netherlands ("CBS", Henri Faasdreef 312) is located next to the station Leidschenveen. Cross the silver bridge to arrive at the main entrance.

From Amsterdam Central Station or Schiphol Airport: Take the Intercity or Fast Train (Sneltrein) to Den Haag (The Hague) Centraal Station. From there take the Randstadrail (tramway 3, 4 or E) to station Leidschenveen (direction Zoetermeer or Slinge/Rotterdam). Statistics Netherlands ("CBS", Henri Faasdreef 312) is located next to the station Leidschenveen. Cross the silver bridge to arrive at the main entrance.

Public Transport Card: (Necessary to use the trams and Randstadrail)
There is no specific OV-chipkaart (the name of the public transport card) for tourists. You can use the anonymous.
Anonymous OV-chipkaart: The anonymous OV-chipkaart is a plastic card on which an amount or a travel product can been loaded. The card costs € 7.50 and you can upload at the machines. You will have to check in and out at the machines in the tram.

You sign in with the card on the tram by the door and you sign out the same way when you exit the tram. Please note that when you hold your card against the little machine, a green light will show, you will hear a beep and "Goede Reis" will show on the screen. When you sign out, the same happens except the text on the screen will then show how much money you have used and the balance remaining on the card. From experience, please do not swipe the card  but hold it against the machine and please do not do this too quickly after the person before you as it sometimes doesn't register.

Please note that if you choose the RET Randstadrail "E" (Destinations "Slinge" or "Den Haag"), the little yellow login/logout machines are located on the perrons, not in the trams.

By car

From Amsterdam or Rotterdam: Take the highway "A4" to Den Haag. Take the exit nr 8 "Leidschendam Zuid" (also indicated by "N14"). Turn to the Noordelijke Randweg in the direction of Zoetermeer. After the traffic lights this road is called "Zoetermeerse Rijweg" and it makes a turn to the right and then to the left. Turn right at the roundabout ("Vaz. Diasdreef"), then at the end turn left and follow the "Henri Faasdreef"; the main entrance of the CBS building can be seen at the end of this road, on your left.
Please note that the space to park your car is very limited. If you decide to arrive by car, please notify the ISI in advance so we can arrange a parking ticket for the garage. The garage entrance is to the left of the main entrance.

From Utrecht: Take the highway "A12" to Den Haag.
At the Prins Claus Plein (a large highway intersection), take the "A4" to Leiden/Amsterdam. After a few minutes, take the exit nr 8 "Leidschendam Zuid" (also indicated by "N14").
Next, see From Amsterdam or Rotterdam.