CREATE TABLE table_13557 ("County" TEXT, "Per capita income" TEXT, "Median household income" TEXT, "Median family income" TEXT, "Population" FLOAT, "Number of households" FLOAT)

What is the Median family income if the Population is larger than 26,233 and has a Per capita income of $20,805?
SELECT "Median family income" FROM table_13557 WHERE "Population" > '26,233' AND "Per capita income" = '$20,805'
SELECT "Median family income" FROM "table_13557" WHERE "Per capita income" = '$20,805' AND "Population" > '26,233'