Tambacounda is the largest city in eastern Senegal, 400 kilometres southeast of Dakar, and is the regional capital of the province of the s…Tambacounda is the largest city in eastern Senegal, 400 kilometres southeast of Dakar, and is the regional capital of the province of the same name. Its population in 2023 was 149,071. Tambacounda is situated on the sparsely populated sahélien plains of eastern Senegal.