Below is a list of Loudoun County VA zip codes. For your research we have also included Loudoun County Area Code, Time Zone, UTC and the local County FIPS Code. Each Loudoun County Virginia zip code has a center Longitude / Latitude point (the Loudoun County center is -77.566398620605 / 39.076400756836). For your convenience we have also indicated if that zip code in Loudoun County observes Daylight Savings time.