CREATE TABLE table_2562572_20 (population__2011_ VARCHAR2, cyrillic_name_other_names VARCHAR2)

Name the number of population for
SELECT COUNT(population__2011_) FROM table_2562572_20 WHERE cyrillic_name_other_names = "Врбас"
SELECT COUNT("population__2011_") FROM "table_2562572_20" WHERE "cyrillic_name_other_names" = "Врбас"