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This is a Non-Federal dataset covered by different Terms of Use than

Loudoun 2020 Census Blocks

Metadata Updated: February 9, 2024

This GIS layer contains the geographical boundaries of the 2020 census blocks for Loudoun County, Virginia. The 2020 Census block boundaries were used for statistical data collection and tabulation purposes for the 2020 Decennial Census. Census blocks are the smallest geographic area for publishing data from the decennial Census. The geographical area covered by this geographic feature class is generally very small in densely settled areas, for instance one city block. In sparsely settled areas they may cover several square miles. Census blocks nest within every 2020 Census geographic area (i.e. block groups, tracts, census designated places, and local, state, and federal election districts). This nesting of blocks allows Census Bureau statistical data to be tabulated to the appropriate geographic areas by aggregating the block data up. Census blocks are uniquely numbered within census tracts, with the blocks valid range being 1 to 9999 with leading zeros added (i.e. 0001, 0023) when necessary to create a four digit unique identifier. This 2010 Census block layer is based on the U.S. Census Bureau Census 2020 TIGER/Line files. The boundaries are an extract of aerial photography and cartographic information, such as roads and streams, from the Loudoun County GIS system. Census Blocks are bounded on all sides by visible features, such as roads, streams, lakes, power lines, and railroad tracks, and/or by non-visible boundaries such as town and county boundaries, and short line-of-sight extensions of streets and roads.

Access & Use Information

Public: This dataset is intended for public access and use. Non-Federal: This dataset is covered by different Terms of Use than License: See this page for license information.

Downloads & Resources


Metadata Created Date September 2, 2022
Metadata Updated Date February 9, 2024

Metadata Source

Harvested from Loudoun County Virginia Data Source

Additional Metadata

Resource Type Dataset
Metadata Created Date September 2, 2022
Metadata Updated Date February 9, 2024
Publisher Loudoun GIS
Data First Published 2021-08-26T20:53:08.000Z
Data Last Modified 2023-09-12T13:43:29.000Z
Category geospatial
Public Access Level public
Metadata Context
Schema Version
Catalog Describedby
Harvest Object Id b25c5e8a-7045-449a-b45a-e998d8fe4cc9
Harvest Source Id bc39e510-cff7-4263-8d5b-7c800dd08cd6
Harvest Source Title Loudoun County Virginia Data Source
Homepage URL
Metadata Type geospatial
Old Spatial -77.9634,38.8489,-77.3240,39.3216
Source Datajson Identifier True
Source Hash 33c8a1b5ceb56019016577c5f80237f7aa9d5b47de3415bdee3c262ffedf9afa
Source Schema Version 1.1
Spatial {"type": "Polygon", "coordinates": -77.9634, 38.8489, -77.9634, 39.3216, -77.3240, 39.3216, -77.3240, 38.8489, -77.9634, 38.8489}

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