Looking on the internet deeply has found these results:

in a bakery is the most popular phrase on the web.

at a bakery 13,460,000 results on the web	in a bakery 115,600,000 results on the web More popular!
Some examples and use cases from the internet:	Some examples and use cases from the internet:
At my other job, at a bakery downtown. I decorated his flat for him, and got him a job at a bakery. And best of all I found us a fun, reasonable two She had a part time job at a bakery. Samir worked at a bakery that supplied the place. Actually, I'm working at a bakery right now. session cupcake decorating class at a bakery.	After college, I had a summer job in a bakery. My mom has worked in a bakery since she was 12. day pastry class, and I ended up staying a year working as an apprentice in a bakery. Charlotte, she's working in a bakery to pay for medical bills that are my responsibility. Also, this Freckles person works in a bakery. I went there to take a six He invested his life savings in a bakery at a time when carbohydrates had fallen completely out of fashion, and, more importantly, he had gambled on the love of his childhood sweetheart, the girl next door who had returned from the dead. So how do you like working in a bakery?

at a bakery

13,460,000 results on the web

in a bakery

115,600,000 results on the web

More popular!

After college, I had a summer job in a bakery.
My mom has worked in a bakery since she was 12.
day pastry class, and I ended up staying a year working as an apprentice in a bakery.
Charlotte, she's working in a bakery to pay for medical bills that are my responsibility.
Also, this Freckles person works in a bakery.
I went there to take a six
He invested his life savings in a bakery at a time when carbohydrates had fallen completely out of fashion, and, more importantly, he had gambled on the love of his childhood sweetheart, the girl next door who had returned from the dead.
So how do you like working in a bakery?