Mecklenburg County is a county located in the southwestern region of the U.S. state of North Carolina, in the United States. As of the 2020 census, the population was 1,115,482, making it the second-most populous county in North Carolina, and the first county in the Carolinas to surpass one million in population. Its county seat is Charlotte, the state's largest municipality.

North Carolina is a state in the Southeastern region of the United States. It is bordered by Virginia to the north, the Atlantic Ocean to the east, South Carolina to the south, Georgia to the southwest, and Tennessee to the west. The state is the 28th-largest and 9th-most populous of the United States. Along with South Carolina, it makes up the Carolinas region of the East Coast. At the 2020 census, the state had a population of 10,439,388. Raleigh is the state's capital and Charlotte is its most populous city. The Charlotte metropolitan area, with an estimated population of 2,805,115 in 2023, is the most populous metropolitan area in North Carolina, the 22nd-most populous in the United States, and the largest banking center in the nation after New York City. The Research Triangle, with an estimated population of 2,368,947 in 2023, is the second-most populous combined metropolitan area in the state, 31st-most populous in the United States, and is home to the largest research park in the United States, Research Triangle Park.