Heggedal is a part of the Asker municipality in Viken county, Norway. For statistical purposes, it's usually treated as part of the Oslo urban area. [1] In 2000, its population was 3,301 [2], and the election district named Heggedal had 2,329 registered voters in the 2005 election. It is mainly a residential area, though the area has a railway station, a church, a library, a middle school and a primary school.