At Police Station Or In Police Station

Both “at the police station” and “in the police station” are used correctly, but their usage depends on context:

• At the police station is generally used when referring to the specific location—a point or place, not necessarily meaning inside the building but at its premises or connected to its broader area. For example, “The police officer is at the police station.”^[1][6]
• In the police station emphasizes being physically inside the building. For example, “I am in the police station,” means one is located within the physical structure.^[2][4][6]

For talking about employment or workplace, both “work at a police station” and “work in a police station” are correct, but “at” emphasizes the specific site of employment, while “in” stresses working inside the building. Native speakers often use both interchangeably depending on context.^[2][4]

References

• [1] The police officer is on the station . (At/on) – Filo
• [2] I work in a police station. Or I work at a police station? – HiNative
• [4] Which preposition is correct? ‎I work in a police station. Or … – HiNative
• [6] Prepositions of place: AT IN ON —[Multimedia-English: grammar]