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_170961_2 (official_name VARCHAR, area_km_2 VARCHAR)
### Question:
What is the name of the parish where the area is 508.30?
### Answer:
SELECT COUNT(official_name) FROM table_170961_2 WHERE area_km_2 = "508.30"