Otopeni is a town in Ilfov County, Muntenia, Romania, neighbouring the north of Bucharest along the DN1 road to Ploiești. It has 21,750 inha…Otopeni is a town in Ilfov County, Muntenia, Romania, neighbouring the north of Bucharest along the DN1 road to Ploiești. It has 21,750 inhabitants, of which 99.0% are ethnic Romanians. One village, Odăile, is administered by the city.