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_21302_1 ( no_of_villages VARCHAR, density_persons___ha VARCHAR )

### Question ###
How many villages have a density persons/ha of 5.5?

### Accurate SQL ###

SELECT COUNT(no_of_villages) FROM table_21302_1 WHERE density_persons___ha = "5.5"