Fewer Americans Calling Themselves Christians, Survey Finds

Similar to Canadian numbers:

The share of Americans calling themselves Christians has dropped sharply in recent years, according to a new Pew Research Center survey — while the population of religiously unaffiliated adults has risen.
Though more Christians call America home than any other country, the percentage of American adults identifying as Christians has fallen from 78.4% in 2007 to about 70.6%. Meanwhile, over one in five (22.8%) say they are unaffiliated with any faith, a 6.7% percentage point jump since 2007.
Pew finds the Millennial generation is leading the decline in religious affiliation, though adults of all ages and across all demographic groups are steering away from Christianity. About 36% of Americans between 18 and 24 claim to be religiously unaffiliated, along with some 34% of Americans between 24 and 33.

http://time.com/3855277/american-christianity-poll-nones/