Who told u kharagpur has only 3 stations? Please correct you knowledge before answering.
Kharagpur has 7 stations at different parts of kharagpur (sadar+gramin area)
1. Kharagpur Jn
2. Hijli
3. Girimaidan
4....
more... Kalaikunda
5. Jakpur
6. Madpur
7. Nimpura ( if u think it is a station then only consider)