What the night sky looks like over Plymouth, IN
Plymouth reads as suburban on this dataset's scale. Light dome dominates much of the sky. Only the brightest stars and planets stand out clearly. That's brighter than 60.2% of the 3,206 US cities in this dataset.
The number comes from orbit, not a stargazer's logbook, so treat it as an estimate of sky glow rather than a certified Bortle class.
Where to go for a darker sky near Plymouth
25 miles from Plymouth, straight-line, sits Warsaw, IN, the nearest city here with a darker sky than Plymouth's own suburban band.
Warsaw, IN is itself still a measured city, not a designated dark-sky park, this only compares against the 3,206 places this dataset covers.
Plymouth against the rest of the dataset
Plymouth, IN counts roughly 11,042 residents, among the 3,206 US cities this site tracks. Among all 3,206 cities here, Plymouth ranks 1,920 from darkest to brightest, 1 being the darkest measured.