The College of Social Science (CoSS) is situated on the main campus of the University of Dar es Salaam, namely Mwalimu Nyerere Mlimani Campus, commonly known as “The Hill”. The College main building is the Social Sciences Tower which is close to the University Administration.The College of Social Sciences started in 1964 as Faculty of Arts and Social Sciences (FASS) and the second oldest faculty of the University of Dar es Salaam (UDSM). In 2009, FASS was changed to the College of Arts and Social Sciences (CASS). The CASS continued to grow in terms of departments and programmes and in 2013 it was split into two Colleges, the College Social Sciences (CoSS) and the College of Humanities (CoHu).

The College of Social Sciences consists of five (4) departments;  Sociology, Statistics, Geography and Political Science and Public Administration. The Department of Sociology consists of three units known as Anthropology, Psychology and Social Work. Apart from the departments shown above, the College has units namely Information Studies in the Library, Social Work, Anthropology and Psychology in the Department of Sociology.