It's obvious that off-campus housing is not too prevalent at Bucknell. Freshmen, in fact, don't have a choice and must live on campus. However, after freshman year, students may move off campus. Housing is guaranteed all four years at Bucknell, so not many students chose to live off campus, and the ones who do are almost all seniors. The students must get approval from the University to live off campus. They have to go through an application process and a variety of factors can prevent them from being approved. For example, if their fraternity house or sorority suite (there are no sorority houses at Bucknell; it's rumored that this is due to an old Pennsylvania law that says more then four women under the same roof is considered a brothel) is not filled, they won't receive approval. Also, students who have accrued a certain number of "points" because of their behavior may be denied the privilege to live off campus.
There is not a significant amount of houses available for rent in the downtown area, and even less are available that are well-kept. However, because there is not a significant demand to live downtown, the lack of houses is not too big of an issue. There are stories circulating of bad landlords and houses that are quite rickety, so it's really important to ask other students what landlords they have used. The majority of students live along and off of 7th Street and 6th Street. This area is always hopping at night with parties, some open to the entire campus, others more exclusive to just a Greek organization or a circle of friends. There is on-campus apartment-style housing available for those who do not want to live off campus, but these apartments are hard to get unless you have an extremely high lottery pick.