Voinjama is a small city that serves as the capital of Lofa County, Liberia and is located in the hilly, far northern part of the country near the Guinean border. As of the 2008 national census, the population stood at 26,594.

Lofa is a county in the northernmost portion of Liberia. One of 15 counties that constitute the first-level of administrative division in the nation, it has nine districts. Voinjama serves as the capital with the area of the county measuring 3,854 square miles (9,980 km2). As of the 2022 Census, it had a population of 367,376, making it Liberia's fourth most populous county.