CREATE TABLE table_23509 ("No." FLOAT, "Barangay" TEXT, "Area  ( in km 2  ) " TEXT, "Rank" FLOAT, "Population  ( 2000 ) " FLOAT, "Population  ( 2007 ) " FLOAT, "Population  ( 2010 ) " FLOAT, "Population Density  ( 2010 ) " TEXT)

In 2010, how many people lived in cities with a population density of 3,965.02?
SELECT "Population (2010)" FROM table_23509 WHERE "Population Density (2010)" = '3,965.02'
SELECT "Population (2010)" FROM "table_23509" WHERE "Population Density (2010)" = '3,965.02'