The UPSC have developed an application form common for all their examinations which will be processed on computerized machines. This application form along with an Information Brochure containing general instructions for filling up the form, an acknowledgement card and an envelope for sending the application is obtainable from the designated Head Post Offices/Post Offices throughout the country as listed below of Notice against cash payment of Rs. 20/- (Rupees twenty only). Form should be purchased from the designated Post Offices only and not from any other agency. This form can be used only once and for only one examination. Candidates must use the form supplied with the Information Brochure only and they should in no case use photocopy/reproduction/unauthorized printed copy of the Form. Since this form is electronically scanable, due care should be taken to fill up the application form correctly.  The candidates should also fill up in the relevant places of the Acknowledgement Card, their Application Form Number (8-digit) and the name of the examination. The applicants are required to affix  the postage stamp of Rs. 6/- on the Acknowledgement Card and send the same along with application form to UPSC.  If an applicant fails to affix the postage stamp of requisite amount his acknowledgement card will not be despatched and Commission will not be responsible for non-receipt of acknowledgement card by the applicant.  The duly filled in application form and the acknowledgement card should then be mailed in the special envelope supplied with the Information Brochure. You should also write the name of examination viz. "Special Class Railway Apprentices' Examination, (& Year in which examination is held )" on the envelope before despatching it to "Secretary, Union Public Service Commission, Dholpur House, New Delhi-110069".

List of Head Post Offices/Post Offices where UPSC application forms are available:

Andhra Pradesh Circle : Hyderabad GPO, Hyderabad Jubilee, Kachiguda Stn., Khairatabad, Secunderabad, Trimulgherry, Adilabad, Anantapur, Arundelpet (Guntur), Chittoor, Cuddapah, Eluru, Kakinada, Karimnagar, Khammam, Kurnool, Machilipatnam, Mahboobnagar, Medak, Nalgonda, Nellore, Nizamabad, Ongole, Srikakulam, Vizianagaram, Vijayawada, Vikarabad, Visakhapatnam, Warangal.
Assam Circle : Guwahati, Barpeta, Dhubri, Dibrugarh, Diphu, Golaghat, Hailakandi, Jorhat, Karimganj, Kokrajhar, Mangaldoi, Nagaon, Nalbari, North Lakhimpur, Sibsagar, Silchar, Tezpur, Tinsukia. 
Bihar Circle : Patna, GPO, Bankipur, Arrah, Aurangabad, B. Deoghar, Bokaro Steel City, Banka, Battiah, Begusarai, Bhagalpur, Biharsharif, Buxar, Chaibasa, Chapra, Daltonganj, Darbhanga, Dhanbad, Dumka, Gaya, Giridih, Gopalganj, Gumla, Hajipur, Hazaribagh, Jamshedpur, Katihar, Madhubani, Motihari, Munger, Muzaffarpur, Nawada, Purnea, Ranchi, Saharsa, Samastipur, Sasaram, Sitamarhi, Siwan.   
Delhi Circle : Delhi GPO, New Delhi, Indra Prastha, Ramesh Nagar, Sarojini Nagar, Lodi Road, Krishna Nagar, Ashok Vihar, Parliament Street, UPSC PO.  
Gujarat Circle : Gandhinagar, Ahmedabad, Amreli Anand, Bharuch, Bhavnagar, Bhuj, Dahod, Godhra, Himatnagar, Jamnagar, Junagadh, Kheda, Mehesana, Navrangpura, Navsari, Palanpur, Patan, Porbandar, Rajkot, Revdi Bazar, Surat, Surendranagar, Valsad, Vadodara. 
Haryana Circle : Ambala GPO, Ambala City, Bahadurgarh, Bhiwani, Faridabad, Gurgaon, Hissar, Jind, Karnal, Kurukshetra, Narnaul, Panipat, Rohtak, Sirsa, Sonepat.   
Himachal Pradesh Circle : Shimla, Bilaspur, Chamba, Hamirpur, Kangra, Keylong, Kulu, Mandi, Nahan, Recong, Peo, Solan, Una.   
Jammu & Kashmir Circle : Srinagar, Anantnag, Baramulla, Jammu, Kathua, Leh, Rajouri, Udhampur.   Karnataka Circle : Bangalore GPO, Bangalore City, Basavangudi, HAL II Stage, Jayanagar, R.T. Nagar, Bagalkot, Raichur, Rajajinagar, Belgaum Bellary, Bidar, Bijapur, Chikmagalur, Chitradurga, Davengere, Dharwad, Gadag, Gulbarga, Hassan, Haveri, Hubli, Karwar, Kolar, Madikere, Mandya, Mangalore, Manipal, Mysore, Nanjagud, Shimoga, Sirsi, Tumkur, Udupi.  
Kerala Circle : Trivandrum, Alleppey (Alappuzha), Calicut, Cannanore, Ernakulam, Kalpetta, Kasargod, Kattappana, Kottayam, Malappuram, Palghat, Pathanamthitta, Quilon, Trichur, Kavaratti, (Lakshadweep). 
 Madhya Pradesh Circle : Bhopal GPO, Bilaspur, Ambikapur, Balaghat, Betul, Bhind, Chhatarpur, Chhindwara, Damoh, Dewas, Dhar, Durg, Guna, Hoshangabad, Indore, Jabalpur, Jagdalpur, Jhabua, Khandwa, Khargone, Lashkar, Mandla, Mandsaur, Morena, Narsinghpur, Neemuch, Raigarh, Raipur, Raisen, Rajgarh (Biora), Rajnandgaon, Ratlam, Rewa, Sagar Cantt., Satna, Sehore, Seoni, Shahdol, Shajapur, Shivpuri, Sidhi, Tikamgarh, Ujjain, Vidisha.
Maharashtra Circle : Mumbai GPO, Andheri, Borivili, Chembur, Chinehbunder, Dadar, Girgaon, Kalbadevi, Mahim, Mandvi, Mumbai Central, Ahmednagar, Akola, Alibag, Amravati, Aurangabad, Beed, Bhandara, Buldhana, Chandrapur, Dhule, Jalagaon, Jalna, Karad, Kolhapur, Latur, Nagpur GPO, Nanded, Nasik, Osmanabad, Parbhani, Pune, Ratnagiri, Sangli, Satara, Sawantwadi, Solapur, Thane, Wardha, Yeotmal, Margaon (Goa), Panaji (Goa).   
North East Circle : Agartala, Aizwal, Dharmanagar, Imphal, Itanagar, Kohima, Radhakishorepur, Shillong, Tura.  
Orissa Circle : Bhubaneswar GPO, Angul, Bolangir, Balasore, Bargarh, Baripada, Berhamapur, Bhadrak, Bhawanipatna, Cuttack GPO, Dhenkanal, Jagatsinghpur, Jajpur, Jeypore (K), Jharsuguda, Kendrapara, Keonjhargar, Koraput, Nayagarh, Parlakhemundi, Phulbani, Puri, Rayagada, Sambalpur, Sundargarh.   
Punjab Circle : Amritsar, Bhatinda, Faridkot, Ferozepur, Gurdaspur, Hoshiarpur, Jalandhar City, Kapurthala, Ludhiana, Moga, Patiala, Ropar, Sangrur, Chandigarh.    
Rajasthan Circle : Jaipur GPO, Jawahar Nagar, Shastri Nagar, Ajmer, Alwar, Banswara, Baran, Barmer, Bharatpur, Bhilwara, Bikaner, Bundi, Chittorgarh, Churu, Dausa, Dholpur, Dungarpur, Hanumangarh, Hindaun, Jaisalmer, Jalore, Jhalawar, Jhunjhunu, Jodhpur, Kankroli, Kota, Nagaur, Pali Marwar, Sawaimadhopur, Shastri Circle Udaipur, Sikar, Sirohi, Sriganganagar, Tonk.  
Tamil Nadu Circle : Chennai GPO, Anna Road, St. Thomas Mount, T. Nagar, Bodinayakanur, Chengalpattu, Chidambaram, Coimbatore, Cuddalore, Dharmapuri, Dindigul, Erode, Kanchipuram, Karur, Madurai, Nagapattinam, Nagercoil, Namakkal, Pudukottai, Ramanathapuram, Salem, Sivagangai, Tambaram, Thanjavur, Thiruvannamalai, Tiruchirapalli, Tirunelveli, Tiruvallur, Tiruvayur, Turaiyur, Tuticorin, Udhagamandalam, Vellore, Villupuram, Virudhunagar, Pondicherry.    
Uttar Pradesh Circle : Lucknow, Lucknow Chowk, Agra, Akbarpur, Aligarh, Allahabad, Allahabad Katchery, Almora, Auraiya, Azamgarh, Bahraich, Ballia, Balrampur, Banda, Bansi, Barabanki, Bareilly, Basti, Bijnor, Budaun, Bulandshahr, Dehradun, Deoria, Dhampur, Etah, Etawah, Faizabad, Fatehgarh, Fatehpur, Firozabad, Ghaziabad, Ghazipur, Gonda, Gopeshwar, Gorakhpur, Haldwani, Hamirpur,Hardoi, Jaunpur, Jhansi, Kanpur, Kheri, Lalitpur, Mainpuri, Mathura, Mau, Meerut, Mirzapur, Moradabad, Muzaffarnagar, Nainital, Orai, Pauri, Padrauna, Pilibhit, Pithoragarh, Pratapgarh, Rai Bareli, Rampur, Roorkee, Saharanpur, Shahajahanpur, Sitapur, Sultanpur, Tehri, Unnao, Varanasi.  
West Bengal Circle : Kolkata (Calcutta) GPO, Alipore, Barabazar, Beleghata, Belghoria, Cassipore, Park Street, Tollygunge, Balurghat, Bankura, Barasat, Berhampore, Burdwan, Chinsurah, Cooch Behar, Darjeeling, Howrah, Jalpaiguri, Krishnagar, Malda, Midnapore, Purulia, Suri, Siliguri, Port Blair (Andaman & Nicobar Islands), Gangtok (Sikkim).  

Field Post Offices through Central Base Post Office (CBPO), 56 APO;
2 Central Base Post Office (CBPO) 99 APO.