Take a look at a map of the Netherlands and other maps that explain more about the layout, geography, and political and social administration of the Netherlands, on this page.
Below is a simple map of the Netherlands:
This map shows the 12 Dutch provinces, along with their capital cities:
Exactly how flat and low-lying the Netherlands is becomes clear in this topographic map of the Netherlands!
Topographic map of the Netherlands
By Janwillemvanaalst (Own work) [CC-BY-SA-3.0], via Wikimedia Commons
There are hundreds of municipalities (gemeente) in the Netherlands. The map below shows you their outlines:
Want to dial a Dutch phone number? This map explains how area codes are divided up across the country:
Map of the Netherlands: Area codes
By BlackNight at nl.wikipedia [Public domain], via Wikimedia Commons
Finally, this map shows how postcodes are distributed in the Netherlands, useful for sending letters and packages.
Map of the Netherlands: Post codes
By BlackNight at nl.wikipedia [Public domain], via Wikimedia Commons