If you are married, unless you are legally separated (i.e., there is a written agreement recognized by a court or a court order), you need to include your spouse as well even if he/she does reside with you and/or will not immigrate with you. Of course, if you are legally divorced or widowed, you no longer have a spouse and you don't have to enter the former spouse information.
In spite of the huge popularity of this lottery draw game it is still an unknown to many that you can buy Powerball tickets online, whether you are in the US or not. To be clear, this doesn’t even mean that you have to be a citizen of the US either. No citizenship & not based in the US? You can still play powerball online and buy lottery tickets online for a number of different lottery draw games.