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_171236_2 (population INTEGER, official_name VARCHAR)

### Question ###
What is the population of Cardwell?

### Accurate SQL ###

SELECT MIN(population) FROM table_171236_2 WHERE official_name = "Cardwell"