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_261222_1 (city___municipality VARCHAR, area__km_2__ VARCHAR)

### Question ###
How many city/municipalties have an area (km2) of 506.64?

### Accurate SQL ###

SELECT COUNT(city___municipality) FROM table_261222_1 WHERE area__km_2__ = "506.64"