 In contrast, the population of the administrative county of Middlesex had increased steadily during that period.From 1951 to 1961 the population of the inner districts of the county started to fall, and the population grew only in eight of the suburban outer districts.According to the 1961 census, Ealing, Enfield, Harrow, Hendon, Heston & Isleworth, Tottenham, Wembley, Willesden and Twickenham had each reached a population greater than 100,000, which would normally have entitled each of them to seek county borough status.