Ansonia, CT: how dark is the sky here?
Satellite radiance puts Ansonia in the suburban edge band. A noticeable glow near the horizon. Brighter stars and constellations are easy to pick out; the Milky Way is washed out. That's brighter than 24.7% of the 3,206 US cities in this dataset.
This comes from a satellite measuring light radiating upward, not a person's eyes on the ground, so it isn't the same as a Bortle class, though the two track each other closely.
How far Ansonia is from a meaningfully darker sky
The closest place in this dataset with a meaningfully darker sky is Shelton, CT, roughly 5 miles away in a straight line, rated rural. Road distance will be more.
Shelton, CT is itself still a measured city, not a designated dark-sky park, this only compares against the 3,206 places this dataset covers.
How Ansonia compares nationally
Ansonia, CT has a population of about 19,195, one of 3,206 US cities of 10,000 or more residents in this dataset. Ansonia places 790 of 3,206 cities in this dataset's darkest-to-brightest order.