The year is 1960. Calgary's population sits at 234,428. Completion of the Trans-Canada Highway is still two years away. A new $1-million terminal at McCall Field welcomes airline passengers, with the first non-stop, transatlantic flight from Calgary to Amsterdam still a year away. The first two buildings on the new University of Calgary campus open and the newly minted community of Brentwood sits on the very edge of the city.

How times have changed.

Senior population in Calgary set to triple in 30 years

Calgary's reputation as a rapidly changing city isn't confined to its architecture.

By the early 2030s, the City projects – for the first time ever – Calgary will be home to more seniors than youth.

"Between 2012 and 2042, the population over 65 is expected to triple from roughly 100,000 people in 2012 to over 300,000 in 2042," said Katie Black, acting director for Community and Neighbourhood Services with the City.