New Haven, IN: how dark is the sky here?
Satellite radiance puts New Haven in the suburban band. Light dome dominates much of the sky. Only the brightest stars and planets stand out clearly. That's brighter than 66.1% 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 New Haven is from a meaningfully darker sky
13 miles from New Haven, straight-line, sits Huntertown, IN, the nearest city here with a darker sky than New Haven's own suburban band.
Huntertown, IN is itself still a measured city, not a designated dark-sky park, this only compares against the 3,206 places this dataset covers.
How New Haven compares nationally
About 16,200 people live in New Haven, IN, sized enough to appear in this dataset of 3,206 incorporated US cities. New Haven places 2,107 of 3,206 cities in this dataset's darkest-to-brightest order.