Below is an context that describes a sql query, paired with an question that provides further information. Write an answer that appropriately completes the request.  # noqa: E501
### Context:
CREATE TABLE table_26007767_1 (localities VARCHAR, population_density__per_km²_ VARCHAR)
### Question:
How many time is the population density (per km²) is 2.5?
### Answer:
SELECT COUNT(localities) FROM table_26007767_1 WHERE population_density__per_km²_ = "2.5"