Margibi is a county on the north to central coast of Liberia. One of 15 counties that constitute the first-level of administrative division in the nation, it has five districts. Kakata serves as the capital with the area of the county measuring 1,010 square miles. As of the 2022 Census, it had a population of 304,946, making it the fifth most populous county in Lib…Margibi is a county on the north to central coast of Liberia. One of 15 counties that constitute the first-level of administrative division in the nation, it has five districts. Kakata serves as the capital with the area of the county measuring 1,010 square miles. As of the 2022 Census, it had a population of 304,946, making it the fifth most populous county in Liberia.