It is on Guringgai land A nature reserve, Kincumba Mountain, is located within the suburb and is often used by the community for various functions, including picnicking, bush-walking, orienteering, parties, and carnivals.

[2] A large open flat rock area at the highest plateau of Kincumba Mountain, which commands panoramic views of the region, was used by Kuringgai people as a meeting place and camp.

Being the highest open position in the region, it was first to receive the morning sun as it broke over the eastern horizon Tasman Sea/Pacific Ocean, and so this area was also referred to as "towards tomorrow".

[citation needed]Signs of habitation in the Kincumber area include axe-grinding grooves and rock engravings on Kincumba Mountain.

[citation needed] Boat building became an early local secondary industry after timber-getting, to meet the primary necessity of water transport.

[5] During the mid-1980s, the town made international headlines for the mistreatment of Eve van Grafhorst, a girl who contracted HIV through an infected blood transfusion after her premature birth.

In the New South Wales Legislative Assembly, Kincumber is within the electorate of Terrigal, currently held by Adam Crouch of the Liberal Party.