Hello,
This is my first post here, be gentle 
I have a love for urbanism, but don’t imagine I would get many prospects for my future career out of completing an Urban Studies program alone. Therefore, I would like to focus on Architecture as my concentration but would still like to pursue the Urban Studies program. Would this be at all possible?
The architecture concentration requires 10 courses plus the language requirement (which can be placed out of).
https://www.brown.edu/academics/art-history/undergraduate/architectural-studes/concentration-architectural-studies
The Urban Studies concentration is also 10 courses.
https://www.brown.edu/academics/urban-studies/undergraduate-program
You’ll take at least 32 courses at Brown so there should be no issue double concentrating in those two.
I didn’t even think to check the course requirements! Thank you!
I think you are mistaken in thinking that there are no career opportunities for urban studies majors. Sure you can double major in architecture, but don’t do it only because you think it will improve your job prospects. Having 20 of 32 courses be required by your major limits your ability to take full advantage of the open curriculum.
Look here, https://www.brown.edu/academics/urban-studies/after-graduation, and here, https://www.brown.edu/academics/urban-studies/urban-studies-alumni and here, https://www.brown.edu/academics/urban-studies/internshipsfellowshipsjobs
Is this something you have to decide right away? An architecture concentration may be helpful if you plan to get involved in urban design, but economics may be better for urban planning, paricularly urban renewal. Also consider whether you see yourself working in the public sector or private/consulting. Either way, take as many project management classes as you can. Urban studies is a big umbrella, so you may need to take a few intro classes to get a better feel for your specific interests. Enjoy, it’s a terrific field to be involved in!
As someone who had 28/32 courses be required by may majors. I respectfully disagree that this sort of pathway is not taking full advantage of the open curriculum. Were it not for the open curriculum I would not have been able to do the double major combination I did.
I’m guessing OP is in high school, so definitely not. Earliest deadline to make this decision is the end of 2nd semester sophomore year.