Halton Hills was established through the amalgamation of Georgetown and Acton, much of Esquesing, and a small portion of Oakville.

Hamilton is the fourth largest city in Ontario, and the ninth in Canada. It is the largest Hamilton in the world with a rich history dating back to 1816. For an extended time, Hamilton and Wentworth County shared some services such as police and other emergency resources, existing as Hamilton-Wentworth. The new City of Hamilton came into being on January 1, 2001 through provincial legislation. Its status formalized the merger of all the communities of Wentworth County into the new City of Hamilton. Communities merged into Hamilton included Ancaster, Dundas, Flamborough, Glanbrook, Stoney Creek and Waterdown.

This category is for websites located in or very close to Harcourt, Ontario, in Haliburton county.

Includes the community of Hanbury and the ghost town of Uno Park. Located within the Timiskaming District.

An unincorporated community in Frontenac County, Eastern Ontario.

This category is for sites based in the town of Havelock, in southern Peterborough county.

Hawkesbury is one of the oldest communities in Ontario, and is located halfway between Montreal and Ottawa on the Ottawa River.

In Muskoka, on Georgian Bay.

Located in the Algoma District.