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_170961_2 (official_name VARCHAR, area_km_2 VARCHAR)

### Question ###
What is the name of the parish where the area is 508.30?

### Accurate SQL ###

SELECT COUNT(official_name) FROM table_170961_2 WHERE area_km_2 = "508.30"