[1] Royal County Down has made outstanding contributions to Irish golf from the Club's beginnings, hosting many important tournaments, starting soon after it opened, and continuing to the present day.

Notably, the Club in 2007 became just the second Irish venue, after Portmarnock, to host the Walker Cup.

The Irish Open on the European Tour took place in late May in 2015, returning to Royal County Down after 76 years.

[2] It previously hosted the event three times, all prior to World War II.

The British Ladies Amateur Golf Championship were held on the course in June 2019.