The U.S. has more than 31,000 post offices, but a recent report found that 42% of them were underwater in 2019. Here’s a post office in Mission, S.D.

The post office in Mission, S.D. saw a steady flow of people on Aug. 6, 2020. The post office is one of four on the roughly 2,000 square miles (5,180 square kilometers) of the Rosebud Indian Reservation (AP Photo/Stephen Groves)