Name the number of area where population density 2010 for 514
CREATE TABLE "municipalities" (
  "administrative_division" text,
  "area_km" text,
  "population_2000_census" real,
  "population_2010_census" real,
  "population_density_2010_km" real
);
SELECT COUNT("area_km") FROM "municipalities" WHERE "population_density_2010_km"=514;