On 1 January 1988 Horten and Borre, with 9,098 and 12,994 inhabitants respectively, merged to form a new municipality. The name of the new municipality was Borre, but it was given the number 0701, indicating continued city status. The village of Borre has a population of 681. On June 1, 2002 the name of the municipality was changed to Horten, following a referendum held in conjunction with the 2001 parliamentary election. The referendum was a close call with 6,557 votes for the name Horten and 6,218 votes for Borre. Horten municipality still carries the municipality number 0701.