Lakmartin is located in the City of Krk, in Primorje-Gorski Kotar County at an elevation of 10 meters above sea level and it covers the area of 9.95 km² (3.84 sq. miles). According to the 2011 census report, there were 24 inhabitants. It is entirely populated by Croats. Nearby places: Muraj, Kornić, Kampelje, Krk, Salatići, Garica, Vrh, Punat, Kras and Brusići.