Have you ever heard your neighbor’s door close, but never heard their voice?

Mina is 24. She lives in a small apartment building. Every morning, she sees the man from next door in the elevator. He gives a small smile. She gives a small smile too. Then both look down at their phones, and the ride ends in silence.

That quiet moment is not unusual now. In the United States, a 2025 survey found that only one in four young adults talk with their neighbors regularly. In 2012, more than half did. (americansurveycenter.org) Pew Research Center also found that only 26% of U.S. adults say they know all or most of their neighbors. (pewresearch.org)

Japan also shows a clear age gap. In 2024, 86.7% of people in Japan said they had neighbors they greet. But among people in their 20s, the number was only 68.8%. (seikatsusoken.jp)

Now, back to Mina. One rainy night, a delivery box is left in the wrong place. The man next door knocks on her door and says, “I think this is yours.” Mina laughs, says thank you, and takes the box.

The next morning, she tries one more sentence. “It’s really raining today.” He looks up and answers, “Yes, and tomorrow will be hot.”

That is the turn. A neighbor does not need to become your best friend. But one small hello can open a small door. One recent U.S. report found that 70% of young adults think being a good neighbor means not getting too involved in other people’s lives. (americansurveycenter.org)

Maybe that protects our space. But it can also make the person next door feel very far away.

So here is a simple thought: sometimes community starts with just five easy words — “Hi. How is your day?”