As at 2011, Didcot had a population of more than 26,000. The new town centre, the Orchard Centre, was opened in August 2005. As part of the Science Vale Enterprise Zone, Didcot is surrounded by one of the largest scientific clusters in the United Kingdom. There are a number of major science and technology campuses nearby, including the Culham Science Centre, Harwell Science and Innovation Campus, and Milton Park. The Diamond Light Source synchrotron, based at the Harwell Campus, is the largest UK-funded scientific facility to be built for more than 30 years.