Märket Märket Island with the unusual national border of 1985. Geography Location Baltic Sea Coordinates 60°18′03″N 019°07′53″E﻿ / ﻿60.30083°N 19.13139°E﻿ / 60.30083; 19.13139Coordinates: 60°18′03″N 019°07′53″E﻿ / ﻿60.30083°N 19.13139°E﻿ / 60.30083; 19.13139 Area 0.03 km2 (0.012 sq mi) Length 0.35 km (0.217 mi) Width 0.15 km (0.093 mi) Administration Finland Region Åland Islands Sweden Provinces Uppland Demographics Population 0