CREATE TABLE table_68364 ("Year" FLOAT, "Population  ( Region total ) " FLOAT, "Population  ( Maryborough ) " FLOAT, "Population  ( Hervey Bay ) " FLOAT, "Population  ( Woocoo ) " FLOAT, "Population  ( Tiaro ) " FLOAT)

Name the total number of population hervey bay with population woocoo less than 640 and population of maryborough less than 19,257
SELECT COUNT("Population (Hervey Bay)") FROM table_68364 WHERE "Population (Woocoo)" < '640' AND "Population (Maryborough)" < '19,257'
SELECT COUNT("Population (Hervey Bay)") FROM "table_68364" WHERE "Population (Maryborough)" < '19,257' AND "Population (Woocoo)" < '640'