Sanger, TX: how dark is the sky here?
Satellite radiance puts Sanger in the rural band. Little local light dome. Most stars are visible; the Milky Way is faint but often findable away from town lights. Sanger's sky is brighter than 7.9% of the 3,206 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 Sanger is from a meaningfully darker sky
The closest place in this dataset with a meaningfully darker sky is Godfrey, IL, roughly 546 miles away in a straight line, rated dark sky. Road distance will be more.
Godfrey, IL is itself still a measured city, not a designated dark-sky park, this only compares against the 3,206 places this dataset covers.
How Sanger compares nationally
Sanger, TX has a population of about 10,142, one of 3,206 US cities of 10,000 or more residents in this dataset. Sanger places 252 of 3,206 cities in this dataset's darkest-to-brightest order.