São Tomé and Príncipe, the smallest country in Africa, lies in the Gulf of Guinea, about 360 km (225 mi) off the west coast of Gabon. The nation has an area of 1,001 sq km (386 sq mi). Comparatively, the area occupied by São Tomé and Príncipe is slightly less than 5.5 times the size of Washington, D.C. São Tomé extends about 49 km (30 mi) NNE–SSW and 29 km (18 mi) ESE– WNW. Príncipe has a length of approximately 21 km (13 mi) SSE–NNW and a width of 15 km (9 mi) ENE–WSW.
São Tomé and Príncipe's capital city, São Tomé, is located on the northeast coast of the island of São Tomé.