São Tomé (population 56,166 in 2005) is the capital city of São Tomé and Príncipe and is by far that nation's largest town. Its name is Portuguese for "Saint Thomas".
São Tomé and Príncipe is divided into 2 provinces: Príncipe and São Tomé. The provinces are further divided into seven districts, six on São Tomé and one on Príncipe (with Príncipe having self-government since 29 April 1995).
The Contador River is located in the northwest of São Tomé and its river valley is possibly the deepest in the country. Several streams run down from the volcanic highlands into the Gulf of Guinea.There are no significant lakes on São Tomé and Príncipe.