Some odd things can happen when the destination is close (relatively speaking), but not too close. A recent example is USPS Parcel Select packages from the SF

Some odd things can happen when the destination is close (relatively speaking), but not too close. A recent example is USPS Parcel Select packages from the SF Bay area to Sacramento being routed through Los Angeles (!). I have seen this twice in the past couple months. This does not happen with Priority Mail.