I think I know two, both from evangelical [name_m]Christian[/name_m] families. [name_f]One[/name_f] is maybe 25 and the other around 30. I’ve not yet met a child with this name.
I know two Ashers, both around 8-10.
http://www.nancy.cc/baby-name/asher/
According to this there’s only at most under 4000 a year, in all of the US.
And it’s only recently picked up steam beyond its diehard fans. Probably kept its numbers down partly due to many American Jews avoiding naming after living relatives, so even if the name is used and known/liked you don’t use it if that’s Grandpa’s name, etc.