The South 40 includes ten residential communities located at the southwest end of the Danforth Campus that serve as the home to first year students and sophomores.
The South 40 is a “small town” with its own fitness center, dining facilities, technology center, meeting rooms, basketball and sand volleyball courts, recreation and game rooms, and music practice rooms. In addition, Bear Necessities (gift shop), Paws & Go (convenience store) the mail room and several student-run businesses are located nearby.
Residence halls located on the South 40 are either modern or traditional buildings.
Modern Suite Style buildings
These facilities consist primarily of double rooms, with some single rooms. Most room layouts consist of two double rooms adjoined by a restroom. Modern buildings have elevators.
| Liggett & Koenig Residential Community | Koenig House Liggett House |
| Park & Mudd Residential Community | Park House Mudd House |
| Robert S. Brookings Residential Community | Gregg House Lien House |
| Thomas H. Eliot Residential Community | Thomas Eliot A House Thomas Eliot B House |
| Umrath & Zetcher Residential Community | Umrath House Zetcher House |
| Wayman Crow Residential Community | Dardick House Nemerov House |
| William Greenleaf Eliot Residential Community | Danforth House Shepley House Wheeler House |
Traditional buildings (Communal and Suite Style)
These facilities have single and double room options on each floor, and each floor community shares common restrooms. Traditional buildings do not have elevators. Some traditional halls are configured in a suite style with double and single rooms and a shared restroom.
| Hitzeman, Hurd & Myers Residential Community: four-six person suites and one-person and two-person bedrooms | Hitzeman Hall Hurd Hall Myers Hall |
| Lee & Beaumont Residential Community: one-person bedrooms | Beaumont Hall Lee Hall |
| Shanedling, Dauten, & Rutledge Residential Community: four-six person suites | Dauten Hall Rutledge Hall Shanedling Hall |
All rooms include the following for each resident:
| Bed frame | |
| Extra long twin mattress (36″x80″) | |
| Desk and chair | |
| Dresser | |
| Closet space or wardrobe | |
| Carpet | |
| Blinds | |
| Central air conditioning and heat | |
| Trash and recycling bin | |
| Adjustable bed frame for additional space |