Hmm, that's not it either. It wasn't part of a trilogy, and was a fairly short book. The moon hadn't been terraformed at all. People needed spacesuits to leave the cities.

What about The Darkangel Trilogy?

No, it's not either of those. The book I read didn't have aliens in it, although it may have had ghosts of aliens.

The Moon Colony by William Dixon Bell, 1938

The Wanderer by Fritz Lieber. 1964

Summary:Dramatizes the varied reactions of people from all parts of the world when a stray planet enters the solar system and contacts Earth.

I'm a huge fan of H.M. Hoover. This definitely wasn't by her. Not only wasn't it well-written, but there was also a bit of sexism.

Could it be something by H.M. Hoover? I've only read a couple of her books (I think they're mostly out of print) but she has several YA sci-fi with variations on that kind of plot.

Diana, thanks. It's definitely not the Martian Chronicles, which I've read (and seen the mini-series), but I can certainly see the similarities between it and my description.

You may want to check Bradbury's Martian Chronicles. It is older than what you remember and Mars rather than the Moon but as I remember (and 30 years after reading it I don't guarantee my memories) it had ghosts and an Americana type setting which would go with the small town American names.

I believe I read this in the late 80s, and it wasn't a very old book. The story takes place in the future on the moon. There are colonies there. The names of the colonies and locations on the moon are all small town American names rather than futuristic Sci-Fi designations, because apparently the people living there feel so isolated from the Earth that they want things to sound familiar.

There are also many ghosts inhabiting the moon. I forget why. They may not be of humans. I'm not sure. Anyway, the one scene I remember from the book happens toward the end. The main character and a woman are away from the cities and walking around on the moon in spacesuits. They must hurry to reach a city even though both are exhausted. The ghosts are trying to prevent them from reaching safety. Eventually they make it.