CREATE TABLE table_name_59 (number_of_households INT, per_capita_income VARCHAR)

What is the Number of Households that have a Per Capita Income of $21,345?
SELECT AVG(number_of_households) FROM table_name_59 WHERE per_capita_income = "$21,345"
SELECT AVG("number_of_households") FROM "table_name_59" WHERE "$21,345" = "per_capita_income"