One thing that schools might think about when issuing interview invitations is whether they are wasting their time with an applicant who would matriculate elsewhere if given an alternative. In other words, is this applicant "low yield"? An applicant who has a spouse tied down in the area will be more likely to matriculate if admitted than someone who has a spouse in another city or one who is has no geographic preference. So, in that regard, a school may care. That said, schools in Philly other than the one your spouse attends may believe that you are relatively lower yield because you would choose your spouse's school over their school.
Another consideration is whether members of the adcom know your spouse and think your spouse is a good student/citizen. If so, there may be a halo effect that you can benefit from.