CREATE TABLE table_72919 ("Official Name" TEXT, "Status" TEXT, "Area km 2" TEXT, "Population" FLOAT, "Census Ranking" TEXT)

What are the official name(s) of places with an area of 304.06 km2?
SELECT "Official Name" FROM table_72919 WHERE "Area km 2" = '304.06'
SELECT "Official Name" FROM "table_72919" WHERE "Area km 2" = '304.06'