Chelmsford (ˈtʃɛlmzfəd) is a city in the City of Chelmsford district in the county of Essex, England. It is the county town of Essex and one of three cities in the county, along with Southend-on-Sea and Colchester. It is located north-east of London at Charing Cross and south-west of Colchester. The population of the urban area was 125,000 in the 2021 Census, while the wider district has 181,763. The demonym for a Chelmsford resident is "Chelmsfordian". The main conurbation of Chelmsford incorporates all or part of the former parishes of Broomfield, Newland Spring, Great Leighs, The Walthams, Great Baddow, Little Baddow, Galleywood, Howe Green, Margaretting, Pleshey, Stock, Roxwell, Danbury, Bicknacre, Writtle, Moulsham, Rettendon, The Hanningfields, The Chignals, Widford and Springfield, including Springfield Barnes, now known as Chelmer Village. The communities of Chelmsford, Massachusetts; Chelmsford, Ontario; and Chelmsford, New Brunswick, are named after the city. Chelmsford's population consists of a large number of City and Docklands commuters, attracted by the 30–35-minute railway journey into Central London via the Great Eastern Main Line. Before 1199, there were settlements nearby from ancient times. The remains of a Neolithic and a late Bronze Age settlement have been found in the Springfield suburb, and the town was occupied by the Romans. A Roman fort was built in AD 60, and a civilian town grew up around it. The town was given the name of Caesaromagus (Caesar's field or Caesar's marketplace), although the reason for it being given the great honour of bearing the Imperial prefix is now unclear – possibly as a failed 'planned town' provincial capital to replace Londinium or Camulodunum. The remains of a mansio, a combination post office, civic centre and hotel, lie beneath the streets of modern Moulsham, and the ruins of an octagonal temple are located beneath the Odeon roundabout. The town disappeared for a while after the Romans left Britain.