North Carolina is located in the southeastern part of the United States, with the Atlantic Ocean to the east, with a land area of 136,560 square kilometers and a population of less than 10 million (about 9.7 million). About half of the state's land is plains, making it the most rural state in the United States, with more than half of the state's population living in rural areas. The capital of North Carolina is Raleigh (Raleigh), the largest city is Charlotte (Charlotte), which is the central city of the banking industry in the United States. Many banks in the United States have established financial businesses here. The most important airports in the state are: Charlotte Douglas International Airport (CLT), a transit hub for US Airways and one of the top 10 busiest airports in the United States. The area code for North Carolina is 252 - 336 - 704 - 828 - 910 - 919 - 980, the zip code is abbreviated NC, and the main city zip codes are as follows: Raleigh zip code starts at 27602, Charlotte zip code is Starting from 27601, other cities such as Greensboro (Greensboro), Chapel Hill (Chapel Hill), Asheville (Asheville) can be searched on this website.