Area code and exchange code is assigned to every constituent of city in the United States. The area and exchange codes of the telephone can be used to find information about a region. Area code 701 and exchange code 335 is assigned to Grand Forks. The latitude and longitude corresponding to 47.92 and -97.03 can be used to find an area on the map. Qwest Corporation - Ndoperates most of the land lines in United States.