[5] The main founders of the denomination were particularly concentrated in the vicinity of Rustenburg, in the Transvaal.

The Gereformeerde Kerke founded a seminary for theological studies and teacher training in Burgersdorp in the Eastern Cape.

It has 415 Congregations ministering to people in all 11 official languages of South Africa.

[13] The Reformed Churches in South Africa have their own Theological Seminary " Die Teologiese Skool"[14] in Potchefstroom.

[7] The Reformed Churches in South Africa has a number of growing local congregations.

Through membership in the World Reformed Fellowship, Gereformeerde Gemeenten collabotates WRF's works, also for example in the International Institute of Islamic Studies.