Why does a package mailed USPS in west palm beach fl to carol stream il go through New York?

Packages mailed via USPS may go through a central processing facility, which can sometimes be located in a different state, like New York, due to the logistics of the postal network. This routing helps streamline sorting and distribution, especially if the package is being sent to a location that is not directly adjacent to the origin. Additionally, the USPS employs a system designed to optimize delivery times and efficiency, which can result in unexpected routing.