Broxbourne is a town in the Borough of Broxbourne in Hertfordshire, England, with a population of 15,303 at the 2011 Census. It is located to the south of Hoddesdon and to the north of Cheshunt, 17 miles (27 km) north of London. The town is near the River Lea, which forms the boundary with Essex, and 5 miles (8.0 km) north of the M25 motorway. To the west of the town are Broxbourne Woods, a national nature reserve. The Prime Meridian runs just east of Broxbourne.