Kaldanija is located in the City of Buje, in Istra County at an elevation of 125 meters above sea level and it covers the area of 2.79 km² (1.08 sq. miles). According to the 2011 census report, there were 231 inhabitants. It is mostly populated by Croats (50%), but also Italians (38%) and Bosniaks (3%). Nearby places: Plovanija, Gamboci, Kaštel, Sveta Marija na Krasu, Vardica, Sveta Marija na Krasu, Vilanija, Buje, Kmeti and Materada.