Registration at the Municipality
Registering with the City of Copenhagen upon Arrival
When first arriving in Denmark you must register with the national registration office of your Municipality ("Folkeregisteret") to receive a Danish Social Security Number (CPR-number). More details on this can be found in your Practical Guide, which you receive upon arrival.
Departure from the City of Copenhagen
Danish law also lays down that all people residing in Denmark must notify the Municipality when they move.
Please see the City of Copenhagen ("Folkeregisteret") website for the steps that must be followed when leaving your current address in Copenhagen,
http://www.kk.dk/Borger/Borgerservice/Selvbetjening/Flytning_ny.aspx
The Housing Department, - last update:15 November 2011