2020 Census Block Groups

Metadata Updated: January 31, 2025

This data layer is an element of the Oregon GIS Framework. The TIGER/Line shapefiles and related database files (.dbf) are an extract of selected geographic and cartographic information from the U.S. Census Bureau's Master Address File / Topologically Integrated Geographic Encoding and Referencing (MAF/TIGER) Database (MTDB). The MTDB represents a seamless national file with no overlaps or gaps between parts, however, each TIGER/Line shapefile is designed to stand alone as an independent data set, or they can be combined to cover the entire nation.

Block Groups (BGs) are clusters of blocks within the same census tract. Each census tract contains at least one BG, and BGs are uniquely numbered within census tracts. BGs have a valid code range of 0 through 9. BGs have the same first digit of their 4-digit census block number from the same decennial census. For example, tabulation blocks numbered 3001, 3002, 3003,.., 3999 within census tract 1210.02 are also within BG 3 within that census tract. BGs coded 0 are intended to only include water area, no land area, and they are generally in territorial seas, coastal water, and Great Lakes water areas. Block groups generally contain between 600 and 3,000 people. A BG usually covers a contiguous area but never crosses county or census tract boundaries. They may, however, cross the boundaries of other geographic entities like county subdivisions, places, urban areas, voting districts, congressional districts, and American Indian / Alaska Native / Native Hawaiian areas.

The BG boundaries in this release are those that were delineated as part of the Census Bureau's Participant Statistical Areas Program (PSAP) for the 2020 Census.

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 Data.gov. License: No license information was provided.

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Dates

Metadata Created Date	July 1, 2023
Metadata Updated Date	January 31, 2025

Metadata Source

Data.json Data.json Metadata
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Harvested from oregon json

Additional Metadata

Resource Type	Dataset
Metadata Created Date	July 1, 2023
Metadata Updated Date	January 31, 2025
Publisher	U.S. Department of Commerce, U.S. Census Bureau, Geography Division, Spatial Data Collection and Products Branch
Maintainer	OR_FRAMEWORK
Identifier	https://www.arcgis.com/home/item.html?id=b76a6c980eda4cf3b76dcba5f64847c5&sublayer=0
Data First Published	2023-06-24
Data Last Modified	2023-06-24
Category	geospatial
Public Access Level	public
Metadata Context	https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
Metadata Catalog ID	https://data.oregon.gov/data.json
Schema Version	https://project-open-data.cio.gov/v1.1/schema
Catalog Describedby	https://project-open-data.cio.gov/v1.1/schema/catalog.json
Harvest Object Id	882c72b0-5915-46bd-b6d7-e21e1c0458ba
Harvest Source Id	d747cd8f-d1d6-49a3-ab0b-ea17684f1121
Harvest Source Title	oregon json
Homepage URL	https://geohub.oregon.gov/datasets/oregon-geo::2020-census-block-groups
Metadata Type	geospatial
Old Spatial	-124.7036,41.9921,-116.4633,46.2991
Source Datajson Identifier	True
Source Hash	83153e9abfeb12232672f68403c3f751a67f3f3cc7b924f40eecbf43d95890d3
Source Schema Version	1.1
Spatial	{"type": "Polygon", "coordinates": -124.7036, 41.9921, -124.7036, 46.2991, -116.4633, 46.2991, -116.4633, 41.9921, -124.7036, 41.9921}

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