Novgorod Oblast (Novgorodskaya oblast) is a federal subject of Russia (an oblast). Its administrative center is the city of Veliky Novgorod. Some of the oldest Russian cities, including Veliky Novgorod and Staraya Russa, are located in the oblast. The historic monuments of Veliky Novgorod and surroundings have been declared a UNESCO World Heritage Site. Population: 634,111 (2010 Census).