Greater Glasgow is an urban settlement in Scotland consisting of all localities which are physically attached to the city of Glasgow, forming with it a single contiguous urban area (or conurbation). It does not relate to municipal government boundaries and its territorial extent is defined by the General Register Office for Scotland, which determines settlements in Scotland for census and statistical purposes. Greater Glasgow had a population of 1,199,629 at the time of the 2001 UK Census making it the largest urban area in Scotland and the fifth-largest in the United Kingdom. However, the population estimate for the Greater Glasgow 'settlement' (a chain of continuously populated postcodes) in mid-2016 was 985,290 – the reduced figure explained by the removal of the Motherwell & Wishaw (124,790), Coatbridge & Airdrie (91,020) and Hamilton (83,730) settlement areas east of the city due to small gaps between the populated postcodes. The 'new towns' of Cumbernauld (which had a 2016 settlement population of 50,920) and East Kilbride (75,120) were never included in these figures despite their close ties to Glasgow due to having a clear geographical separation from the city.