Virginia · FIPS 51107 · County seat: Leesburg

Loudoun County, VA GIS & Parcel Viewer

Parcel lookups for Loudoun County start at Loudoun County Mapping. This page gives you that official link, notes on how the viewer works, and links to the counties next door.

Open the Loudoun County parcel map ↗
Opens logis.loudoun.gov in a new tab. We link out and never embed or copy parcel data.

Loudoun County at a glance

Official map	Loudoun County Mapping
Type	County-run map
Website	logis.loudoun.gov
Access	Free, no login (checked Oct 2026)
County seat	Leesburg
Population	436,347 (2023 Census Bureau estimate)
Land area	516 sq mi
FIPS code	51107

About the official source

Loudoun County runs this viewer (directly or through a contracted vendor), which makes it the closest thing to the source for local parcel lines. When we tested the link in October 2026 it opened with no login and no fee.

How to use the Loudoun County viewer

Open the official link in a new tab.
Accept any disclaimer, then look for a search box that takes street addresses, owners or parcel IDs.
Zoom in and click a parcel to see its details.
Use the map's layer controls to add aerials or other layers if they're offered.

Many parcel sites expect owner names last name first. If a full name finds nothing, try just the surname.

The county in brief

Loudoun County had an estimated 436,347 residents in 2023, according to the Census Bureau. With about 516 square miles of land, that works out to roughly 846 people per square mile. Among Virginia's 133 counties and independent cities, it is the 4th largest by population. Leesburg serves as the county seat.

Nearby parcel maps

Parcels close to the edge of Loudoun County can fall in the next county over. Neighboring counties:

Before you rely on the lines

Keep in mind that a GIS parcel layer is a tax map, not a survey. For exact boundaries, look at the recorded deed and plat or hire a licensed land surveyor.

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