CREATE TABLE table_13016 ("County" TEXT, "Per capita income" TEXT, "Median household income" TEXT, "Median family income" TEXT, "Population" FLOAT, "Number of households" FLOAT)

Which County has a Median household income of $37,230?
SELECT "County" FROM table_13016 WHERE "Median household income" = '$37,230'
SELECT "County" FROM "table_13016" WHERE "Median household income" = '$37,230'