Population estimates were released today by Statistics Canada for the estimated population of metropolitan cities across Canada as of July 2010. Halifax had a strong growth rate of 13.73 people per thousand (or 1.373%)
http://www.statcan.gc.ca/pub/91-214-x/2009000/t014-eng.htm . The growth rate has been increasing since 2005/2006 .
The total HRM population as of July 2010 was 403,188 -
http://www.statcan.gc.ca/pub/91-214-x/2009000/t013-eng.htm . If the HRM continued to grow at 1.373% then by now (Feb 3, 2011) the population would be around 406K.
It should be noted that the population estimates include a factor to compensate for census under-counts (some people for one reason or another do not fill out the census forms). So the population estimates shouldn't be compared to the 2006 census numbers when determining growth rates. Likewise the 2006 census numbers shouldn't be used as the basis for the HRM population unless the under-count factor is included.
Various other population breakdown data is given here -
http://www.statcan.gc.ca/pub/91-214-x/2009000/tablelist-listetableaux1-eng.htm