After the census of 1849, the government decided to keep the information up to date. These records are called population registers and show where a family lived in a certain period. Because the registers cover a longer period (usually 10 years), you can see who moved in or out, or who was born or died, which makes them much more informative than census records. Many population registers are available on Familysearch.org and can be found using Genver (see: use Genver to find Dutch records on Familysearch).
Civil registration records are generally the most reliable sources for information about births, marriages and deaths and the first place you should look for 19th or 20th century information. Many are indexed on WieWasWie and scans are available on Familysearch by using Genver.
Before 1850, census records (or ‘volkstellingen’) can be used in addition to the information from the civil registration and church records. Census records are not widely available online and usually require a visit to an archive.