Once upon a time, there was a great king called Vikramaditya - the WAM-4 - Shashank

Classification of numbering of Kolkata EMU trains.

Here is the list of Kolkata EMU numbering types.

30xxx series—Kolkata Circular Railway.
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31xxx series—Sealdah Main Line locals.
1) 310xx—Budge Budge - Naihati.
2) 311xx—Sealdah - Katwa, Sealdah - Barddhaman and Naihati - Kalyani Simanta.
3) 312xx—Sealdah - Barrackpore
4) 313xx—Sealdah - Kalyani Simanta
5) 314xx—Sealdah - Naihati
6) 315xx—Sealdah - Shantipur, Ranaghat - Krishnanagar City (via Shantipur) and Shantipur - Krishnanagar City.
7) 316xx—Sealdah - Ranaghat
8) 317xx—Naihati - Ranaghat, Ranaghat - Krishnanagar City, Ranaghat - Gede, Ranaghat -Lalgola EMU Passenger and Ranaghat - Shantipur.
9) 318xx—Sealdah - Krishnanagar City
10) 319xx—Sealdah - Gede

32xxx Series—Sealdah - Dankuni - Baruipara Series
1) 322xx—Sealdah - Dankuni
2) 324xx—Sealdah - Baruipara

33xxx series—Sealdah - Barasat - Bongaon/Hasnabad series
1) 330xx—Canning - Barasat
2) 331xx—Sealdah - Biman Bandar (now cancelled)
3) 332xx—Dum Dum - Barrackpore, Barasat - Dum Dum, Dum Dum - Gobardanga, Hasnabad - Dum Dum and Dum Dum - Dankuni.
4) 333xx—Barasat - Hasnabad, Barasat - Habra, Barasat - Dattapukur, Barasat - Bongaon. and Gobardanga - Barasat Local.
5) 334xx—Sealdah - Dum Dum Cantt, Sealdah - Madhyamgram and Sealdah - Barasat.
6) 335xx—Sealdah - Hasnabad.
7) 336xx—Sealdah - Dattapukur, Sealdah - Habra and Sealdah - Gobardanga.
8) 337xx—Ranaghat - Bongaon and Shantipur - Bongaon.
9) 338xx—Sealdah - Bongaon and Sealdah - Thakurnagar.


34xxx series—Sealdah South Lines.
1) 340xx—Naihati - Budge Budge, Kalyani Simanta - Budge Budge and Bongaon - Canning.
2) 341xx—Sealdah - Budge Budge
3) 343xx—Baruipur - Sonarpur, Baruipur - Lakshmikantapur, Sonarpur - Canning, Ghutiari Sharif - Sonarpur and Sonarpur - Champahati.
4) 344xx—Sealdah - Sonarpur
5) 345xx—Sealdah - Canning
6) 346xx—Sealdah - Baruipur
7) 347xx—Sealdah - Lakshmikantapur, Sealdah - Namkhana and Sealdah - Kakdwip.
8) 348xx—Sealdah - Diamond Harbour, Sonarpur - Diamond Harbour, Baruipur-Diamond Harbour and Sealdah - Magrahat.
9) 349xx—Namkhana - Lakshmikantapur, Namkhana - Kakdwip, Kakdwip - Lakshmikantapur.

350xx Series—Barddhman - Katwa Locals.

36xxx Series—Howrah - Barddhaman Chord Line locals.
1) 360xx—Howrah - Baruipara, Howrah - Chandanpur, Howrah - Gurap and Howrah - Masagram.
2) 368xx—Howrah - Barddhaman (via Chord)

37xxx Series—Howrah Main Line locals.
1) 370xx—Howrah - Shrirampur and Howrah - Seoraphuli.
2) 371xx—Howrah - Belur Math
3) 372xx—Howrah - Bandel
4) 373xx— Howrah - Singur , Howrah - Haripal, Howrah - Tarakeswar, Howrah - Arambagh, Howrah - Goghat, Tarakeswar - Goghat, Tarakeswar - Arambagh.
5) 374xx—Seoraphuli - Tarakeswar.
6) 375xx—Bally - Bandel and Naihati - Bandel
7) 376xx—Howrah - Pundooah, Howrah - Memari.
8) 377xx—Bandel - Pundooah, Bandel - Memari, Bandel - Katwa, Bandel - Barddhaman.
9) 378xx—Howrah - Barddhaman (via Main Line)
10) 379xx—Howrah - Katwa.

38xxx Series—Howrah SE Railway Locals.
1) 380xx—Shalimar - Santragachi and Howrah - Haldia.
2) 381xx—Santragachi - Uluberia and Howrah - Uluberia.
3) 382xx—Howrah - Bagnan.
4) 383xx—Santragachi - Mecheda and Howrah - Mecheda.
5) 384xx—Santragachi - Panskura and Howrah - Panskura.
6) 385xx—Howrah - Balichak
7) 386xx—Howrah - Kolaghat
8) 387xx—Howrah - Kharagpur and Santragachi - Kharagpur.
9) 388xx—Howrah - Midnapore.
10) 389xx—Howrah - Amta and Santragachi - Amta.