[2][3] The main economic activities include mining (rutile and bauxite), fishing, rice growing and oil palm plantations.

The Mende people are the largest ethnic group in Moyamba District; However, there is a large population of ethnic minority groups in the district that make up closer to 50% of the District population, including the Temne people, Fulani, Sherbro, Kissi, Mandingo, and Kuranko.

Moyamba is home to a significantly large population of ethnic Temne minority, and is home to the largest ethnic Temne population in the Southern Province of Sierra Leone.

[2][3] Moyamba District is the birthplace of many of the country's highest profile politicians who helped guide the country to independence in 1961 from the United Kingdom, including Milton Margai, Albert Margai, John Karefa-Smart and Siaka Stevens.

Politically, Moyamba District is a stronghold of the Sierra Leone People's Party(SLPP), as the vast majority of residents in the District support the SLPP.