Harlington is a village in the civil parish of Barnburgh in the Metropolitan Borough of Doncaster in South Yorkshire, England. The village lies less than a mile from the adjoining village of Barnburgh and the parish contains both villages. According to the 2001 census, Harlington had a population of 1,979, increasing to 2,297 at the 2011 Census. The village is located about 3 miles (4.8 km) (by road) north of Mexborough, 2 miles (3.2 km) east of Goldthorpe and about 8 miles (13 km) west of Doncaster. Doncaster itself lies about 200 miles (320 km) north of London.