CREATE TABLE table_204_600 (id DECIMAL, "name" TEXT, "status" TEXT, "population" DECIMAL, "district" TEXT, "former local authority" TEXT)

what is the largest area in terms of population ?
SELECT "name" FROM table_204_600 ORDER BY "population" DESC LIMIT 1
SELECT "name" FROM "table_204_600" ORDER BY "population" DESC NULLS LAST LIMIT 1