CREATE TABLE table_1599 ("Official Name" TEXT, "Status" TEXT, "Area km 2" TEXT, "Population" FLOAT, "Census Ranking" TEXT)

What is the area in km2 for Dufferin?
SELECT "Area km 2" FROM table_1599 WHERE "Official Name" = 'Dufferin'
SELECT "Area km 2" FROM "table_1599" WHERE "Official Name" = 'Dufferin'