For most of my life, I've lived in big cities: New York, Munich, Frankfurt, Paris, London, etc. Two years ago, I moved to a suburban/semi-rural town. What a difference! There is rarely a line (any line) at my post office. I am greeted by name. Service is excellent and friendly. It has been a revelation.
And I am a huge fan of USPS Priority Mail. It is SO MUCH FASTER than UPS or FedEx Ground, yet it costs about the same. Packages almost always arrive in 2 days, with excellent tracking.
So, yeah. Check with your local post office. Something is definitely wrong.
Regards,
Adam