If the area is 66.34, what is the minimum (2010 census) population?
CREATE TABLE "political" (
  "city_municipality" text,
  "no_of_barangays" real,
  "area_km" text,
  "population_2010_census" real,
  "pop_density_per_km" text
);
SELECT MIN("population_2010_census") FROM "political" WHERE "area_km"='66.34';