Night Light of Norco (California) from space (United States) Src. Average luminocity for 10x10km area is 78.3444% and for 50x50km: 64.51%.
Square area 10x10 km:
 12.41%
 20.1%
 5.24%
 22.9%
 38.99%
 0.35%
 0%
 0%
 0%
 0%
 0%Square area 50x50 km:
 15.75%
 15.36%
 7.42%
 10.22%
 14.79%
 7.46%
 6.13%
 3.93%
 3.77%
 7.38%
 7.78%Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
34° 30' 45.1" North, 118° 15' 6.4" West
33° 55' 52.1" North, 117° 32' 55.2" West
33° 20' 44.7" North, 116° 50' 43.9" West
Some cities around Norco sort by population:
• Corona
		6.4 km =4 mi, 
194°
• Eastvale
		3.9 km =2.4 mi, 
338°
• Jurupa Valley
		7.4 km =4.6 mi, 
23°
• Glen Avon
		10.7 km =6.6 mi, 
33°
• Pedley
		8.3 km =5.2 mi, 
53°
• Home Gardens
		6.4 km =4 mi, 
156°
• Sunnyslope
		13.9 km =8.6 mi, 
49°
• El Cerrito Corona
		10.3 km =6.4 mi, 
166°
Sources (retrieved 2019-11-25):
» Earth at Night: Flat Maps 2012, 2016