Frederiksborg County (Danish: Frederiksborg Amt) is a former county (Danish: amt) in the north of the island of Zealand in eastern Denmark. Effective January 1, 2007, the county was abolished and merged into Region Hovedstaden (i.e. Copenhagen Capital Region).

List of County Mayors

FromToCounty Mayor
April 1, 1970March 31, 1978Hans Andersen (Venstre)
April 1, 1978August 22, 1982 †Svenn Schmidt (Conservative)
August 22, 1982September 8, 1982Jørgen Christiansen (acting) (Venstre)
September 9, 1982December 31, 1985Bent Løber (Conservative)
January 1, 1986December 31, 1989Jørgen Christiansen (Venstre)
January 1, 1990December 31, 1997Kirsten Ebbensgaard (Conservative)
January 1, 1998December 31, 2001Lars Løkke Rasmussen (Venstre)
January 1, 2002December 31, 2006Jørgen Christensen (Venstre)

Municipalities (1970-2006)

Allerød Birkerød Farum Fredensborg-Humlebæk Frederikssund Frederiksværk Græsted-Gilleleje Helsinge Helsingør HillerødHundested Hørsholm Jægerspris Karlebo Skibby Skævinge Slangerup Stenløse Ølstykke

55°56′N 12°19′E/55.933°N 12.317°E/ 55.933; 12.317