Herndon is a city located in the Virginia region of the United States. During the most recent census, Herndon had a population of 23,292. Herndon is the 47th most poplulated city in the Virginia region, the 1,907th most populated city in the United States and the 12,316th most populated city in the world. Herndon is in the America/New York timezone which is 4 hours behind UTC. Herndon adjusts the hour with daylight savings time during the winter months.
Herndon is located near sea level (110 meters / 361 feet). The closest cities to Herndon are Oak Grove (2.2 km / 1.4 miles), Reston (3.9 km / 2.4 miles), Floris (4.3 km / 2.7 miles), Sterling (5.5 km / 3.4 miles) and Sugarland Run (7.6 km / 4.7 miles)