How much math...

...is involved with urban planning?

Perhaps a better question is what types of math are involved?

I'm in my first year of university, but I'm looking at switching my major to Human Geography for next year, which is essentially urban planning (though less specific to it). I took no math whatsoever in my last year of high school, as it has never been a strong suit for me.

The degree I'll receive is a BA, not a BSc...in other words, they won't be teaching me a whole lot of math. Yet, I have a feeling math has an important role in the actual job.

What sort of math can I expect to encounter in the future, and will my lack of math education thus far hold me back?

Thanks,
-Mike from Canada