CREATE TABLE table_name_56 (median_household_income VARCHAR2, per_capita_income VARCHAR2)

What is the median household income when the per capita is $21,585?
SELECT median_household_income FROM table_name_56 WHERE per_capita_income = "$21,585"
SELECT "median_household_income" FROM "table_name_56" WHERE "$21,585" = "per_capita_income"