Gbarnga babban Birni ne na Gundumar Bong, Laberiya, tana arewa maso gabashin Monrovia. A lokacin yakin basasar Liberia na Farko, shi ne tushe ga Charles Taylor na National Patriotic Front of Liberia. Kwalejin Cuttington, mai zaman kansa, kungiyar hadin gwiwar Episcopal, tana kusa da garin. Harabarta ta kasance gida ga Gidan Tarihi na Afirka, wanda aka lalata yayin yakin basasa. Kamar yadda yake a cikin kidayar skekarar 2008, Gbarnga tana da yawan jama'a 34,046. Daga cikin wannan, 16,080 maza ne yayin da mata 17,966; ita ce birni na hudu mafi yawan jama'a a cikin Laberiya. Gbarnga ita ce garin Tamba Hali, kwararren dan wasan kwallon kafa na Kansas City Manyan thewallon Nationalwallon Nationalasa a Amurka. Garin ya kasance tagwaye da Baltimore, Maryland, a Amurka. Yanayi Köppen Geiger tsarin rarraba yanayi ya sanya yanayinsa a matsayin damina mai zafi (Am). Yanayinta suna kama da babban Birnin Monrovia, amma ba sa ruwa sosai kuma yana da yanayi mai sanyi da daddare. Ilimi Makarantar sakandaren Gboveh Makarantar Katolika ta Katolika ta St. Martin Williams VS Tubman-Gray babbar makarantar sakandare AB Francis SDA Makaranta.