the voice usa 2015 open call summer auditions dates cities locations for season 9 have been released on the nbcthevoice website, just the actual venue the audition is taking place is not currently released but will be soon.
you need to first register/apply online at the nbcthevoice which is the official casting site, when registering you will create a artist account and be able to fill in the voice usa 2015 online application form.
so the details are now out, and you might not have far to travel as well if one of these cities is close to were you live, here is the list below which are for the upcoming season 9 of the voice usa, and these are the dates cities/locations for the summer open call audition rounds, make a note of these dates:
detroit, michigan - june the 13th and 14th 2015.
oklahoma city, oklahoma - on june the 20th and 21st 2015.
new york, new york - on july the 18th and 19th 2015.
los angeles, california - on july the 25th and 26th 2015.