Castle Pines, CO: how dark is the sky here?

Satellite radiance puts Castle Pines 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 13.4% 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 Castle Pines is from a meaningfully darker sky

19 miles from Castle Pines, straight-line, sits Aurora, CO, the nearest city here with a darker sky than Castle Pines's own suburban edge band.

Aurora, CO is itself still a measured city, not a designated dark-sky park, this only compares against the 3,206 places this dataset covers.

How Castle Pines compares nationally

Castle Pines, CO counts roughly 15,162 residents, among the 3,206 US cities this site tracks. Castle Pines places 428 of 3,206 cities in this dataset's darkest-to-brightest order.