Question: What is the zip postcode where Kaitlin lived? | Do you mean the zip postcode in the ares where the staff with first name Kaitlin lived? | Yes
SQL: SELECT T1.zip_postcode FROM Addresses AS T1 JOIN Staff AS T2 ON T1.address_id  =  T2.staff_address_id WHERE T2.first_name  =  "Kaitlin"