Potters Bar is a town in the Hertsmere borough of Hertfordshire, England, located 18 miles (29 km) north of Central London. In 2001 it had a population of 21,618.
The town originated in the early 13th century and remained a small settlement until the arrival of the Great Northern Railway in 1850. It is part of the London commuter belt.
Served by Potters Bar Station and various buses.
See also Potters Bar Urban District
More information on the Wikipedia page [1]