Round Rock, TX Night Sky Brightness
Round Rock, TX's night sky, measured from orbit
Round Rock reads as suburban edge on this dataset's scale. A noticeable glow near the horizon. Brighter stars and constellations are easy to pick out; the Milky Way is washed out. Only 39.7% of the 3,206 cities measured here read darker than Round Rock.
Note the source: a satellite reading of upward light, not a visual Bortle scale reading. The two measure related but different things, explained in the Bortle scale guide.
How far Round Rock is from a meaningfully darker sky
The closest place in this dataset with a meaningfully darker sky is Lago Vista, TX, roughly 20 miles away in a straight line, rated rural. Road distance will be more.
Lago Vista, TX is itself still a measured city, not a designated dark-sky park, this only compares against the 3,206 places this dataset covers.
How Round Rock compares nationally
Round Rock, TX counts roughly 135,359 residents, among the 3,206 US cities this site tracks. Round Rock's position, 1,265 of 3,206, darkest to brightest, comes from the sampling method the methodology guide sets out.