what is the address of Zonal Railways at mumbai?

Answer 1

Mumbai along with Kolkatta have privilege of having head quarter of two Railway Zones - Central Railway and Western Railway.

Addresses are:
Western Railway
Station Building,
Opp Churchgate Railway Station
Mumbai- 400020.
(Beautiful Building)

Central Railway
Headquarter Office,
Chhatrapati Shivaji Terminus,
Mumbai - 400001.

http://www.centralrailwayonline.com/examples/jsp/RTI_ACT/rti_CR_HQ.htm

Answer 2

go to wikipedias article on indian railways

No. Name Abbr. Headquarters Date established
1. Northern Railway NR Delhi April 14, 1952
2. North Eastern Railway NER Gorakhpur 1952
3. Northeast Frontier Railway NFR Maligaon(Guwahati) 1958
4. Eastern Railway ER Kolkata April, 1952
5. South Eastern Railway SER Kolkata 1955,
6. South Central Railway SCR Secunderabad October 2, 1966
7. Southern Railway SR Chennai April 14, 1951
8. Central Railway CR Mumbai November 5, 1951
9. Western Railway WR Mumbai November 5, 1951
10. South Western Railway SWR Hubli April 1, 2003
11. North Western Railway NWR Jaipur Oct 1, 2002
12. West Central Railway WCR Jabalpur April 1, 2003
13. North Central Railway NCR Allahabad April 1, 2003
14. South East Central Railway SECR Bilaspur, CG April 1, 2003
15. East Coast Railway ECoR Bhubaneswar April 1, 2003
16. East Central Railway ECR Hajipur Oct 1, 2002
17. Konkan Railway† KR Navi Mumbai Jan 26, 1998

Zonal Railway Divisions
Northern Railway Delhi, Ambala, Firozpur, Lucknow, Moradabad
North Eastern Railway Izzatnagar, Lucknow, Varanasi
Northeast Frontier Railway Alipurduar, Katihar, Lumding, Rangia, Tinsukia
Eastern Railway Howrah, Sealdah, Asansol, Malda
South Eastern Railway Adra, Chakradharpur, Kharagpur, Ranchi
South Central Railway Secunderabad, Hyderabad, Guntakal, Guntur, Nanded, Vijayawada
Southern Railway Chennai, Madurai, Palghat, Tiruchchirapalli, Trivandrum
Central Railway Mumbai, Bhusawal, Pune, Solapur, Nagpur
Western Railway Mumbai Central, Baroda, Ratlam, Ahmedabad, Rajkot, Bhavnagar
South Western Railway Hubli, Bangalore, Mysore
North Western Railway Jaipur, Ajmer, Bikaner, Jodhpur
West Central Railway Jabalpur, Bhopal, Kota
North Central Railway Allahabad, Agra, Jhansi
South East Central Railway Bilaspur, Raipur, Nagpur
East Coast Railway Khurda Road, Sambalpur, Visakhapatnam
East Central Railway Danapur, Dhanbad, Mughalsarai, Samastipur, Sonpur

Answer 3

I think their headquarters are in the Chhatrapati Shivajo Terminus.