Undergraduate students live in 77 different houses, including 67 University-assigned houses, seven residential fraternities, and three residential sororities. Residences are located around the campus within a ten-minute walk or bike ride of most classrooms and libraries. Residences vary greatly in their program, type of building, method of service provision, configuration, and facilities. Stanford generally classifies its residences as residence halls, small-group houses, apartments, and suites. Each type of residence offers a distinct lifestyle that tries to meet the needs of Stanford’s diverse student body.