Well, Man is in the name ... BozeMAN. And a common nickname is Mantana. Last I checked the statistics for MSU was around 65-70% Male. I can't remember the exact figure, and that was about 5 years ago.
That being said, it depends on where you are. On the mountain you will see no girls. Downtown you will see girls, however their attractiveness may vary and they will be a slight minority. I can't vouch too much for the downtown scene though, it may different now that the R and Slegion are gone. On campus it will depend on you major. If you are an Engineering student, expect to only see girls outside of the EPS/Roberts buildings. Other majors will fare better though. Parties near campus are the best place to see a fair ratio of attractive girls. Parties are very hit and miss, it helps to be friends with people that have a house and throw parties a lot. Don't expect to see many girls if you hang around in the summer. Almost all of the college age girls don't live in Bozeman year round. But if you are there in the summer, the place to find the few still there are floating or downtown.
Oh ... and avoid KO's club ... those girls are all in high school.
