CREATE TABLE table_203_568 (id DECIMAL, "town/village" TEXT, "population" DECIMAL, "postal code" TEXT, "municipality" TEXT, "island" TEXT, "location" TEXT)

which town/village has the highest number of people ?
SELECT "town/village" FROM table_203_568 ORDER BY "population" DESC LIMIT 1
SELECT "town/village" FROM "table_203_568" ORDER BY "population" DESC NULLS LAST LIMIT 1