This website lists the top 25 CMAs/CAs for immigration for last year (2016).
http://canadaimmigrants.com/canada-immigrants-by-metropolitan-area-2016/
There are five Atlantic Canadian cities on the list:
#10 - Halifax (4,570)
#18 - Charlottetown (2,095)
#19 - Fredericton (1,490)
#21 - Moncton (1,390)
#23 - Saint John (1,235)
Two notes:
1) - For it's size, Charlottetown blows everyone else out of the water!!!

2) - Where's St. John's?????