CREATE TABLE table_name_56 (population VARCHAR(255), official_name VARCHAR(255), area_km_2 VARCHAR(255))
When the communities name is Balmoral and the area is over 43.51 kilometers squared, what's the total population amount?
    
SQL: SELECT COUNT(population) FROM table_name_56 WHERE official_name = "balmoral" AND area_km_2 > 43.51