Central Bank of India, a government-owned bank, is one of the oldest and largest commercial banks in India. It is based in Mumbai. The bank has 4700 branches, 5000 ATM's and 4 extension counters across 27 Indian states and three Union Territories. At present, Central Bank of India has overseas office at Nairobi, Hong Kong and a joint venture with Bank of India, Bank of Baroda, and the Zambian government.