CREATE TABLE table_18764 ("Rank" FLOAT, "Place" CLOB, "County" CLOB, "Per Capita Income" CLOB, "Median House- hold Income" CLOB, "Population" FLOAT, "Number of Households" FLOAT)

how many county with per capita income being $20,101
SELECT COUNT("County") FROM table_18764 WHERE "Per Capita Income" = '$20,101'
SELECT COUNT("County") FROM "table_18764" WHERE "Per Capita Income" = '$20,101'