Loudoun County, located in the state of Virginia, contains a range of ZIP codes that are essential for mail delivery, demographics, mapping, and regional planning. Below is a complete list of ZIP codes associated with this county.

These ZIP codes help identify specific areas and communities within the county, ranging from small towns and villages to broader rural stretches. Whether you’re moving to Loudoun County, setting up a business, or analyzing demographic trends, understanding ZIP code distribution is an essential part of the process.

Zip code
20160
20135
20141
20120
20164
20166
20129
20101
20132
20167
20149
20189
20175
20159
20152
20147
20165
20177
20178
22066
20158
20598
20148
20130
20184
20197
20104
20103
20117
20176
20146
20105
20151
20180
20131

To know more about Loudoun County, click the button below:

Loudoun County Information

Use this tool to find your area details by using zip code.

ZIP Code to County

Note: Some ZIP codes may span across county borders and may be listed under more than one county. This is common in rural or low-population areas where ZIP code regions are broader.

Source: Data compiled from official county records, USPS ZIP code data, and the United States Census Bureau.

Frequently Asked Questions

How many ZIP codes are in Loudoun County County?

There are approximately 35 ZIP codes in this county. Check the table above for the complete list.

Do ZIP codes in Loudoun County overlap with other counties?

Yes, some ZIP codes may span more than one county. This is especially common in less populated or rural areas.