Canada. Post Office Department

The Post Office Department was the Canadian government body created in 1867 to run the country’s postal service under the Postmaster General. Over time it grew into a nationwide system that linked cities, small towns, and remote communities, becoming one of the key public services in everyday Canadian life.

Its history stretches back even further through earlier colonial mail systems, but Confederation gave Canada a unified postal administration. The department helped expand routes, adopted new delivery methods such as airmail, and later began using the public-facing name Canada Post before a major structural change in 1981.

That year, the Canada Post Corporation Act replaced the Post Office Department with the modern Canada Post Corporation. Even so, the department remains an important part of Canadian history because it helped create the communications network that served the country for more than a century.