站里 is the locative pattern noun +
里 'inside N' — productive across many nouns (
家里 at home,
屋里 in the room,
心里 in one's heart).
站 covers train/bus/police/fire/work stations, so context decides which station you're inside. Use
在站里 for 'at/in the station';
到站里 for 'arrive at the station'.
