CREATE TABLE table_2562572_20 (largest_ethnic_group__2002_ VARCHAR, population__2011_ VARCHAR)

Name the largest ethnic group for 24112
SELECT largest_ethnic_group__2002_ FROM table_2562572_20 WHERE population__2011_ = 24112
SELECT "largest_ethnic_group__2002_" FROM "table_2562572_20" WHERE "population__2011_" = 24112