Bars categorized by the kind of patrons who frequent them:
Biker bars, which are bars frequented by motorcycle enthusiasts and (in some regions) motorcycle club members
Cop bars, where off-duty law enforcement agents gather
College bars, usually located in or near universities, where most of the patrons are students
Gay bars, where gay men or women dance and socialize
Mixed gay/straight bars, mainly targeting bisexuals
Neighborhood bars, a bar that most of the patrons know each other; it is generally close to home and is frequented regularly
Sailor bars, usually located in waterfront areas near commercial docks or naval bases.
Singles bars where (mostly) unmarried people of both sexes can meet and socialize
Sports bars, where sports fans gather to cheer on their favorite teams with other like-minded fans
Women's bars