In 1781 the British Government started purchasing land from the Mississauga Nation.
In 1818, they bought what are now the townships of Esquesing and Nassagaweya.
Halton Hills was known as Esquesing Township.
The Town of Halton Hills was formed in 1974 by the consolidation of the Towns of Acton, Georgetown, Esquesing Township and the Villages of Ballinafad, Glen Williams, Stewarttown, Limehouse, Glen Lawson, Speyside, Ashgrove, Crewson's Corners, Bannockburn, Henderson's Corners, Whaley's Corners, Mansewood, Hornby, Silver Creek, Terra Cotta a Norval.

The town GEORGETOWN is named for George Kennedy, who came to the Esquesing Township area as one of the first settlers, as his brother Charlesy surveyed land there after the so-called Indian Purchase.
In 1819, all five brothers claimed land in the vicinity of present-day Georgetown and began their businesses.
It was about 1837 when the area became to be known as Georgetown.

In 1825 the first settlers arrived in the area. Rev. Ezra, Rev. Zena and Rufus Adams left the Methodists to pursue the farming life It is not until 1836, however, that the settlement is named Adamsville.
When the first post office was established here in 1844, Robert Swan, the first postmaster, changed the name Adamsville to Acton, after his birthplace in England.