Guinea, on the west coast of Africa, has an area of 245,857 sq km (94,926 sq mi), extending 831 km (516 mi) SE–NW and 493 km (306 mi) NE–SW. Comparatively, the area occupied by Guinea is slightly smaller than the state of Oregon. Bordered on the N by Senegal, on the N and NE by Mali, on the E by Côte d'Ivoire, on the S by Liberia and Sierra Leone, on the W by the Atlantic Ocean, and on the NW by Guinea-Bissau, Guinea has a total boundary length of 3,719 km (2,311 mi), of which 320 km (199 mi) is coastline.
Guinea's capital city, Conakry, is located on the country's Atlantic coast.