CREATE TABLE table_name_71 (number_of_households INT, median_household_income VARCHAR)

How many households have a Median household income of $43,889?
SELECT AVG(number_of_households) FROM table_name_71 WHERE median_household_income = "$43,889"
SELECT AVG("number_of_households") FROM "table_name_71" WHERE "$43,889" = "median_household_income"