Night Light of Washington, D.C. from space (United States) Src. Average luminocity for 10x10km area is 98.5986% and for 50x50km: 77.1177%.
Square area 10x10 km:
 70.75%
 70.75% 23.98%
 23.98% 4.25%
 4.25% 1.02%
 1.02% 0%
 0% 0%
 0% 0%
 0% 0%
 0% 0%
 0% 0%
 0% 0%
 0%Square area 50x50 km:
 23.92%
 23.92% 18.1%
 18.1% 11.61%
 11.61% 13.95%
 13.95% 10.92%
 10.92% 7.88%
 7.88% 3.96%
 3.96% 3.98%
 3.98% 3.19%
 3.19% 1.24%
 1.24% 1.26%
 1.26%Clear (daylight) street map image can be seen on geolist.org.
Map coordinates:
39° 26' 24.9" North, 77° 44' 22.2" West
38° 53' 42.4" North, 77° 2' 10.9" West
38° 20' 44.7" North, 76° 19' 59.7" West
 
Some cities around Washington, D.C. sort by population:
• Arlington
		6.1 km =3.8 mi,  255°
255°
• Chillum
		8.6 km =5.3 mi,  27°
27°
• Shaw
		2.3 km =1.4 mi,  34°
34°
• Glassmanor
		9.1 km =5.7 mi,  158°
158°
• Adams Morgan
		3 km =1.9 mi,  350°
350°
• Rosslyn
		3.1 km =1.9 mi,  273°
273°
• Chevy Chase
		8.1 km =5 mi,  340°
340°
• Mount Rainier
		8 km =5 mi,  50°
50°
Sources (retrieved 2019-11-25):
» NASA, Earths city lights 1995
» NASA city lights 2003
» Earth at Night: Flat Maps 2012, 2016
Src.2: Tim Kopra, Twitter/@astro_tim, 2016-03-29