When the # is 4, what is the pop./ km²?
CREATE TABLE table_2252745_1 (pop__km² VARCHAR, _number VARCHAR)
SELECT pop__km² FROM table_2252745_1 WHERE _number = 4
### Context: CREATE TABLE table_2252745_1 (pop__km² VARCHAR, _number VARCHAR) ### Question: When the # is 4, what is the pop./ km²? ### Answer: SELECT pop__km² FROM table_2252745_1 WHERE _number = 4