On January 1, 2001, the new city of Hamilton was formed from the amalgamation of Hamilton and its five neighbouring municipalities: Ancaster, Dundas, Flamborough, Glanbrook, and Stoney Creek. --> Before amalgamation, the "old" City of Hamilton had 331,121 residents and was divided into 100 neighbourhoods. The former region of Hamilton-Wentworth had a population of 490,268. The amalgamation created a single-tier municipal government ending subsidization of its suburbs. The new amalgamated city had 519,949 people in more than 100 neighbourhoods, and surrounding communities.