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_73712 ( "Name" text, "Municipal district" text, "Population (2011)" real, "Population (2006)" real, "Change (%)" text, "Land area (km\u00b2)" text, "Population density (per km 2 )" text )

### Question ###
What is the density per km in Smoky Lake County?

### Accurate SQL ###

SELECT "Population density (per km 2 )" FROM table_73712 WHERE "Municipal district" = 'Smoky Lake County'