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_2500440_1 ( population_density__per_km_2__ VARCHAR, name VARCHAR )

### Question ###
What is the population density in Buffalo Lake?

### Accurate SQL ###

SELECT population_density__per_km_2__ FROM table_2500440_1 WHERE name = "Buffalo Lake"