The story of the Railways on the Indian subcontinent started on 16th April, 1853, when the first train steamed out of Boribunder on way to Thane on the present Mumbai Division of Central Railway. The Division also holds the distinction of running the first electric train on Indian Railways on 3rd February, 1925 (on Harbour Line).
Starting from the Boribunder - Thane Section, the Railway net spread far and wide. In about a decade time, the route upto Pune was opened for traffic.
By 1865 the services on Mumbai- Igatpuri had also commenced.
The quadrupling of lines between Victoria Terminus – [now re-christened as Chatrapati Shivaji Terminus (CST)] and Kalyan commenced in 1905 and was completed by 1917.
The Victoria Terminus – Kurla, Harbour Branch line was electrified on 03.02.1925 with 1500 Volts DC. The entire Main line route (upto Pune and Igatpuri) were electrified by 1930 on 1500 Volts DC. The 1500 Volts DC Traction Section of Vasai-Panvel-Jasai was converted into 25 kV AC Traction on 29.10.2003, North East section of Kasara - Titwala and Kalyan - Titwala were converted into 25 kV AC Traction on 12.11.2006 & 03.05.2009 respectively. The South East section of Vangani - Lonavla and Kalyan - Vangani were converted into 25 kV ac traction system on 02.05.2010 & 24.10.2010 respectively
Two of the oldest workshops of Indian Railways, viz. Parel (Established in 1879) and Matunga (Established in 1915) are also located in the geographical boundary of Mumbai Division of Central Railway.
All the developments mentioned above were originating from CST, the line from Diwa to Panvel was opened for Passenger traffic in 1964. This was further extended upto Roha during the early 80s, which in turn opened into the Konkan Railway Systems. The line between Diwa and Vasai Road was also commissioned in 1983-84.
A new suburban double line section from Vashi to Thane (18.60 Kms) was commissioned for Commuter traffic on 9th November, 2004.
A new Route from Thane to Nerul / Panvel (4.68 Kms) was commissioned for Commuter Traffic on 10.01.2009
Mumbai Division has 564.43 Kms Route Kilometers which includes 20.29 RKM of Narrow Gauge (Neral - Matheran Section)
The Division falls in the jurisdiction of Maharashtra State, serving civil Districts of Greater Mumbai, Thane, Raigad, Pune and Nasik. The Division serves the commercial, financial and industrial capital of the country viz Mumbai.
The suburban system of Mumbai is the life - line of the city.
All Mail Express and Freight trains from North East and South East directions have to negotiate steep 1 in 37 gradients of Thal ghat and Bhor ghat respectively.
In addition to the above, Mumbai Division is also running the Narrow guage trains between Neral and Matheran a Hill station, also known as Matheran Light Railway, since 1907. This is a very popular tourist attraction.