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_21370 ( "Official Name" text, "Status" text, "Area km 2" text, "Population" real, "Census Ranking" text )

### Question ###
What are the census ranking(s) for a population of 284?

### Accurate SQL ###

SELECT "Census Ranking" FROM table_21370 WHERE "Population" = '284'