My town's name is Variety, because there are all kinds of villagers out there with different personalities and you can have a variety of landmarks and services there too. I think it's a fitting name for such a town. Not to mention all the different fruit trees and flowers and bushes.
My town is called Willow since I was originally thinking about naming it Willowfield but that was too long a name. Willowfield is the name of my own fictional location so it felt like a pleasant choice to name an Animal Crossing town after it.
I named my town Pumpkin because I love fall and a lot of really good fall time foods is made with pumpkin and I just love pumpkin bread. Plus, it sounded kinda cute for a town name and I just wanted to try a new town name rather than my old one, Oceana. I may use Pumpkin for my town name for now on, especially when the new game comes out next year.
Flowert's my town, there's not really a meaning behind it, just a traditional name I always do.
It's an edit of the town "Petalburg", the Koopa village in Paper Mario: The Thousand Year Door.
I usually name my town Cerulean, because it's been part of my name for a long while. But I wanted to name it something cute this time, so I went with Stardew, because stars and sparkly dew is so pretty!
Popstar: Named after the planet Kirby lives on.
Twinleaf: The name of the starting town in Pokemon Diamond/Pearl, which is the first Pokemon game I got to play.
Aberwood ↬ I'm starting a cozy, forest-y, natural-feeling town and I wanted a name that sounded real and used words relating to nature (aber- meaning an estuary or river mouth) while still being unique.
By the way, I read everyone else's, too! There are some great town names in here, y'all