Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_1686313_1 (pop_density__per_km²_ VARCHAR, barangay VARCHAR)

### Question ###
Name the population density when barangay is tiptip

### Accurate SQL ###

SELECT pop_density__per_km²_ FROM table_1686313_1 WHERE barangay = "Tiptip"