There are 17 zip codes in Loudoun County, Virginia. The most populated is 20147, located in Ashburn. * 2024 populations estimated based on the latest ACS 5-year data.

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Zip Code
Population
City
2014766,917Ashburn
2014862,554Ashburn
2017650,640Leesburg
2016442,310Sterling
2015235,538Chantilly
2016534,222Sterling
2010533,967Aldie
2017533,189Leesburg
2013219,114Purcellville
2016613,479Sterling
201418,425Round Hill
201807,571Lovettsville
201584,886Hamilton
201353,359Bluemont
201172,997Middleburg
201972,359Waterford
20129533Paeonian Springs
showing: 17 rows

Zip Codes in Loudoun County, Virginia by Population (2024)