Grace Garret waits in line at the post office in Buena Vista on July 27, 2022. Garret lives in the town limits, but the Postal Service charges residents for post office boxes.

WATERBURY — The post office on North Main Street in Waterbury sits only a 10-minute drive from the one on Guptil Road in Waterbury Center. But it can cost about three times as much to rent a P.O. Box ...