The Uphams Corner Post Office is one of 30 post offices in the Greater Boston area under consideration for closure.

USPS is required to post a notification in the post office, alerting customers of the potential closure.

The lines at Uphams Corner are often long. The branch made $423,000 last year, short of USPS’s $500,000 requirement.

Uphams Corner is located on a busy section of Columbia Road where traffic is frequent and parking is minimal. The post office owns just two parking spots.

The Post Office, facing a multi-billion dollar deficit, is encouraging customers to use services online.

Uphams Corner is home to a huge immigrant population, who use the post office to send packages overseas, especially around the holidays.

The Uphams Corner post office is safe at least until a delay on closures is lifted on May 15. If USPS officials had decided to close the branch, its doors would have shut in late February.

The Uphams Corner Post Office is centrally located near a large number of small businesses.

Camillo Miendez, the owner of a shoe store, puts a sign up asking customers to wait for him while he runs across the street to the post office. If Uphams Corner were to close, he would have to close his doors for much longer.