A list of all the Loco sheds statewise.one is there in the FAQ but i am just updating it.
Andhra Pradesh
1. Vijayawada (BZA)
2. Vishakhapatnam (VSKP)
3. Lallaguda (LGD)
4. Maula Ali (MLY)
5. Gooty (GY)
6. Guntakal (GTL)
7. Kazipet (KZJ)
Assam
1. New Guwahati (NGC)
2. Lumding (LMG)
...
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3. Rangapara North (RPAN)
Bihar
1. Jamalpur (JMP)
2. Samastipur (SPJ)
Chhattisgarh
1. Bhilai (BIA)
2. Raipur (R)
Delhi
1. Shakurbasti (SSB)
2. Tughlakabad (TKD)
Gujarat
1. Sabarmati (SBI)
2. Vadodara (BRC)
3. Valsad (BL)
4. Vatva (VTA)
5. Pratapnagar (PRTN)
Haryana
1. Ambala Cantt. (UMB)
2. Kalka (KLK)
Jharkhand
1. Bokaro Steel City (BKSC)
2. Patratu (PTRU)
3. Gomoh (GMO)
4. Tatanagar (TATA)
Karnataka
1. Hubli (UBL)
2. Krishnarajapuram (KJM)
Kerala
1. Ernakulam (South) (ERS)
Madhya Pradesh
1. Itarsi (ET)
2. Katni (KTE)
3. New Katni (NKJ)
4. Ratlam (RTM)
5. Mhow (MHOW)
6. Gwalior (GWO)
Maharashtra
1. Ajni (AJNI)
2. Bhusawal (BSL)
3. Kalyan (KYN)
4. Kurla (CLA)
5. Pune (PUNE)
6. Murtajapur (MZR)
7. Motibagh (MIB)
8. Neral (NRL)
Odisha
1. Angul (ANGL)
2. Bondamunda (BNDM)
Punjab
1. Ludhiana (LDH)
2. Pathankot (PTK)
Rajasthan
1. Abu Road (ABR)
2. Bhagat Ki Kothi (BGKT)
3. Phulera (FL)
4. Dhaulpur (DHO)
Tamil Nadu
1. Arakkonam (AJJ)
2. Erode (ED)
3. Ponmalai Golden Rock (GOC)
4. Royapuram (RPM)
5. Tondiarpet (TNP)
Uttar Pradesh
1. Ghaziabad (GZB)
2. Gonda (GD)
3. Izzatnagar (IZN)
4. Jhansi (JHS)
5. Kanpur (CNB)
6. Lucknow (LKO)
7. Mughalsarai (MGS)
West Bengal
1. Andal (UDL)
2. Assansol (ASN)
3. Bardhhaman (BWN)
4. Beliaghata (BGA)
5. Howrah (HWH)
6. Kharagpur (KGP)
7. Malda Town (MLDT)
8. Santragacchi (SRC)
9. Siliguri (SGUJ)

The list of Loco Sheds n Loco Holdings in States!!
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Tamil Nadu: -
1:- Royapuram:- WAP-1, WAP-4, WAP-7 (cs)
2:- Erode:- WDM-2c, WDM-2A, WDM-3A, WDM-3c, WDM-3D, WDG-3A WAP-4, WAG-7
3:- Arrakanomm:- WAM-4, WAP-1, WAP-4
4:- Tondiarpet:- WDM-2A, WDM-7 (Bio Diesel)
5:- Ponnamalai:- WDM-2A, WDP-1, WDP-3A, WDP-4, WDP-4B
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Kerala:-
1:- Ernakulam:- WDM-2A, WDM-3A, WDM-3D, WDG-3A,...
Read more...

WDS-6
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Andhra Pradesh:-
1:- Gooty:- WDM-2A, WDM-3A,WDM-3D, WDG-3A, WDM-3F
2:- Guntakal:- WDM-3A, WDM-3D, WDG-3A
3:- Lallaguda:- WAP-4, WAP-7, WAG-7, WAG-9
4:- Maula Ali:- WDM-2A,WDM-3A, WDG-3A
5:- Kazipet:- WDM-2A, WDM-3A, WDG-3A, WAG-7
6:- Vijayawada:- WDP-1, WDS-6, WAM-4, WAG-5, WAG-7
7:- Visakhapatnam:- WDM-2A, WDM-3A, WDG-3A, WDS-6, WAM-4, WAG-6, WAG-7
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Karnataka:-
1:- Krishnarajapuram:- WDS-6 WDM-2c, WDM-2A, WDM-3A, WDG-3A, WDP-4, WDG-4
2:- Hubli:- WDP-4, WDG-4, WDP-4B
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Maharashtra:-
1:- Kalyan:- WDM-2A, WDM-3A, WDM-3D, WDG-3A, WAG-5, WCAM-1, WCAM-2, WCAM-3, WCAM-2P, WCAG-1
2:- Ajni:- WAP-7, WAG-7
3:- Bhusaval:- WAM-4, WAP-4
4:- Pune:- WDM-2A, WDM-3A, WDM-3D, WDG-3A, WDG-4
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Gujarat:-
1:- Vadodara:- WAM-4, WAP-4, WAP-5, WAG-5
2:- Vatva:- WDM-2A, WDM-3A, WDM-3D, WDG-3A
3:- Valsad:- WCAM-1, WCAM-2p, WAG-5
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Chattisgarh:-
1:- Raipur:- WDM-3A, WDG-3A, WDG-4
2:- Bhilai:- WAM-4,
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Madhya Pradesh
1:- Ratlam:- WDM-2A, WDM-3A, YDM
2:- Itarsi:- WDP-4, WDP-4B, WAM-4, WAP-4, WAG-7
4:- Katni:- WDM-2A, WDM-3A, WDM-3D, WAG-7
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Jharkhand:-
1:- Tata:-WAM-4, WAG-5, WAG-7, WAG-9(cs)
2:- Bokaro:- WDM-2A
3:- Gomoh:- WAP-7, WAG-7, WAG-9
4:- Patratu:- WDM-2A, WDM-3A, WDM-3D
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West Bengal:-
1:- Howrah:- WDM-2A, WDM-3A, WDS-6 WDM-3D, WAP-4, WAP-7
2:- Barddhamann:- WDM-3A, WDM-2A, WDG-3A, WDM-6
3:- Santragachi:- WAP-4
4:- Siliguri:- WDM-2A, WDP-4, WDG-4
5:- Andal:- WDM-2A, WAG-7
6:- Asansol:- WAM-4, WAP-4, WAP-6(R), WAG-5, WAG-7, WAG-9(cs)
7:- Kharagpur:- WDM-2A, WDM-3A, WDM-3B
8:- Malda Town:- WDM-2, WDM-3A
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Odisha:-
1:- Angul:- WAG-5, WAG-7
2:- Bondamunda:- WDM-3A, WDG-3A
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Bihar:-
1:- Samastipur:- WDM-2A, WDM-3A
2:- Jamlapur:- WDM-2A, WDM-3A
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Uttar Pradesh:-
1:- Ghaziabad:- WAM-4, WAP-1, WAP-4, WAP-5, WAP-7
2:- Lucknow:- WDM-2A, WDM-3A, WDG-4
3:- Kanpur:- WAM-4, WAP-4, WAG-7
4:- Mughal Sarai:- WAM-4, WAP-4, WAG-7
5:- Izzatnagar:- WDM-2A, WDM-3A
6:- Gonda:- WDM-2, WDM-3A, WDM-3B, WDM-3C, WDM-3D, WDS-6
7:- Jhansi:- WAG-7,WDM-2, WDM-3A, WDM-3B, WDG-3A, WDS-6
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Delhi:-
1:- Tuglaqbaad:- WDM-2A, WDM-3A, WDM-3D, WDP-1, WDP-3A, WDP-4, WDP-4B, WDP-4D, WAG-5, WAG-7, WAG-9
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Rajasthan:-
1:- Abu Road:- WDP-4, WDM-3A, WDM-3D, WDG-3A
2:- Bhagat Ki Kothi:- WDM-3D, WDP-4, WDP-4B
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Punjab:-
1:- Ludhiana:- WDM-2A, WDM-3A, WAP-4
*********************************
Assam:-
1:- Guwahati:- WDM-2, WDM-2A WDS-6, WDM-3A
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These are the latest updates till now.
CS means Coming soon to the respective sheds
R means Rare cases
Any more updations, they're welcome!!