Erwin is a town that is located in the eastern part of Harnett County, North Carolina, United States, located approximately 5 miles from Dunn and approximately 20 miles from Fayetteville. The city is a part of the Dunn, NC Micropolitan Statistical Area, which is additionally a part of the greater Raleigh-Durham-Cary, NC CSA, according to the United States Census Bureau. Currently, the city has a population of 5,270 as of the 2020 census.