{ Raleigh is the capital of the state of North Carolina and the seat of Wake County in the United States. Raleigh is known as the "City of Oaks" for its many oak trees, which line the streets in the heart of the city. The city covers a land area of 142.8 square miles. The U.S. Census Bureau estimated the city's population as 451,066 as of July 1, 2015. It is one of the fastest-growing cities in the country.