CREATE TABLE table_12496904_1 (_2012 VARCHAR, population_august_15 INT, population_density_2012__km_2__ VARCHAR)

What is the August 15, 2012 population when the population density of 2012 is 307?
SELECT MAX(population_august_15), _2012 FROM table_12496904_1 WHERE population_density_2012__km_2__ = 307
SELECT MAX("population_august_15"), "_2012" FROM "table_12496904_1" WHERE "population_density_2012__km_2__" = 307