Frederiksværk Municipality
| Structural data | |
|---|---|
| Headquarters of the administration | Frederiksværk |
| surface | 89.56 km² |
| Residents | 20,324 (2004) |
| Municipality since 2007 | Halsnæs Commune |
Frederiksværk Kommune was until December 2006 a Danish commune in what was then Frederiksborg Amt in the north of the main island of Zealand . Since January 2007 it has been part of the newly formed Halsnæs Municipality together with the former Hundested Municipality (called Frederiksværk-Hundested Municipality until December 31, 2007).