Next up, the proportion of young adults. This is where the change is more visible. I threw in the CMA average to get a sense of us v. the rest of the cities. Remember, Canada overall is aging and the proportion of young adults has been decreasing slowly for decades. This data only looks at the CMAs, which have a far slower decline in young adults.
My takeaways:
- Both Calgary and Edmonton seem to be experiencing a similar in magnitude decline
- One interpretation could be that the younger adults chose to stay in the cities from pre-2006, pumping up older demographics and creating the relative decline. Similarly, Calgary and Edmonton have done a far better job at attracting 25 to 34 year olds that most cities, so the huge growth in these brackets reduces the relative proportion of youth
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I don't think I agree with your analysis of these statistics; the share of 20 to 24 year olds over time isn't all that meaningful. How many of those 20 to 24 year olds that came here in 2005 are still here on that chart? We retained zero. Not a one. Neither did Edmonton, nor Toronto, nor Winnipeg.
Because none of those 20 to 24 year olds that were on the rise in 2005 are 20 to 24 year olds now; they're 35 to 39 year olds in today's measures. What's worse, probably a lot of those 20 to 24 year olds had kids here, which reduces the share of 20 to 24 year olds in the CMA (it also makes them more likely to stay here).
Here's the net change by age group in the Calgary CMA by five year intervals (except the last one, which is only four years).
By far the most dominating trend is a little something called the baby boom, and the subsequent echo boom - which 20 to 24 year olds were part of in the first few years of the 21st century.
Why was Calgary different from other CMAs in the trend of 20-24 year olds then? Because of the oil boom -- the one of the early 1980s, which also brought lots of people in their 20s and early 30s to town, who then had kids; the 20 to 24 year old population in 2005 were kids born 1981-1985.
Tracking by age groups is a lot different than tracking the number of university-educated residents, or the number of STEM workers, or the number of high-income workers, or the number of immigrants; these groups are relatively stable, where age groups have a 20% turnover every year even if everybody stays in the same place.
That doesn't mean that it wouldn't be good to attract young people; it's just hard to consider the share of young people to be important, and it's hard to measure attracting young people versus other demographic shifts.