CREATE TABLE table_18958648_1 (state_and_district_of_columbia VARCHAR, overweight__incl_obese__adults VARCHAR)

How many states or District of Columbia have 65.4% overweight or obese adults?
SELECT COUNT(state_and_district_of_columbia) FROM table_18958648_1 WHERE overweight__incl_obese__adults = "65.4%"
SELECT COUNT("state_and_district_of_columbia") FROM "table_18958648_1" WHERE "65.4%" = "overweight__incl_obese__adults"