Table schema:
CREATE TABLE table_name_9 (county VARCHAR, area__sq_mi_ VARCHAR)

Question: Which is the total number in the 2010 Census in Oconee County where the area in square miles was less than 674?
SQL: SELECT SUM(2010 AS _census_population) FROM table_name_9 WHERE county = "oconee county" AND area__sq_mi_ < 674