We use “in” for cities. states, countries, and rooms:
I live in New York City.
I live in New York State.
I live in the United States.
I’m in the bathroom.
We use “at” for places like work, home, school, or stores – and also for addresses.
I’m at work.
I’m at home.
I study English at University Settlement.
University Settlement is at 184 Eldridge Street.
I’m at Macy’s.
We use on for floors, islands, and streets:
I live on the second floor.
The Statue of Liberty is on Liberty Island.
University Settlement is on Eldridge Street.
I live on 12th Avenue.
Watch this video to learn more, and afterwards take the quiz to test your understanding: