Census 2020: Block Groups for San Francisco Clipped to the Shoreline

A. SUMMARY Census blocks with Pacific Ocean and San Francisco Bay water clipped out. Census Block groups are the next level above census blocks in the geographic hierarchy. Block groups are a combination of census blocks that is a subdivision of a census tract.A block group consists of all census blocks whose numbers begin with the same digit in a given census tract; for example, block group 3 includes all census blocks numbered in the 300s. More information on the census tracts can be found here.

B. HOW THE DATASET IS CREATED The boundaries are uploaded from TIGER/Line shapefiles provided by the U.S. Census Bureau and clipped using the water boundaries provided by the U.S. Census Bureau.

C. UPDATE PROCESS This dataset is static. Changes to the census blocks are tracked in multiple datasets. See here for 2000 census tract boundaries.

D. HOW TO USE THIS DATASET This boundary file can be joined to other census datasets on GEOID. Column descriptions can be found on in the technical documentation included on the census.gov website

E. RELATED DATASETS Census 2020: Census Tracts for San Francisco Analysis Neighborhoods - 2020 census tracts assigned to neighborhoods Census 2020: Blocks for San Francisco Census 2020: Blocks for San Francisco Clipped to SF Shoreline Census 2020: Blocks Groups for San Francisco

Data and Resources

Field Value
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identifier https://data.sfgov.org/api/views/6rf8-dnst
issued 2022-07-22
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license http://opendatacommons.org/licenses/pddl/1.0/
modified 2024-03-13
publisher data.sfgov.org
resource-type Dataset
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theme {"Geographic Locations and Boundaries"}
Groups
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  • National Provider
  • North America
Tags
  • AmeriGEO
  • AmeriGEOSS
  • CKAN
  • GEO
  • GEOSS
  • National
  • North America
  • United States
  • census
  • census-block-group
isopen False
license_id other-license-specified
license_title other-license-specified
maintainer Tania Jogesh
maintainer_email no-reply@data.sfgov.org
metadata_created 2025-09-23T16:32:49.083684
metadata_modified 2025-09-23T16:32:49.083690
notes <strong>A. SUMMARY</strong> Census blocks with Pacific Ocean and San Francisco Bay water clipped out. Census Block groups are the next level above census blocks in the geographic hierarchy. Block groups are a combination of census blocks that is a subdivision of a census tract.A block group consists of all census blocks whose numbers begin with the same digit in a given census tract; for example, block group 3 includes all census blocks numbered in the 300s. More information on the census tracts can be found <u><a href="https://www.census.gov/programs-surveys/geography/about/glossary.html#:~:text=Block%20Groups%20(BGs)%20are%20statistical,data%20and%20control%20block%20numbering.">here</a></u>. <strong>B. HOW THE DATASET IS CREATED</strong> The boundaries are uploaded from TIGER/Line shapefiles provided by the <u><a href="https://www.census.gov/cgi-bin/geo/shapefiles/index.php?year=2021&layergroup=Block+Groups">U.S. Census Bureau</a></u> and clipped using the <u><a href="https://www.census.gov/cgi-bin/geo/shapefiles/index.php?year=2021&layergroup=Water">water boundaries</a></u> provided by the U.S. Census Bureau. <strong>C. UPDATE PROCESS</strong> This dataset is static. Changes to the census blocks are tracked in multiple datasets. See here for <u><a href="https://data.sfgov.org/d/wymm-gfht">2000</a></u> census tract boundaries. <strong>D. HOW TO USE THIS DATASET</strong> This boundary file can be joined to other census datasets on GEOID. Column descriptions can be found on in the <u><a href="https://www.census.gov/programs-surveys/geography/technical-documentation/complete-technical-documentation/tiger-geo-line.2020.html">technical documentation</a></u> included on the census.gov website <strong>E. RELATED DATASETS</strong> <u><a href="https://data.sfgov.org/d/tmph-tgz9">Census 2020: Census Tracts for San Francisco</a></u> <u><a href="https://data.sfgov.org/d/sevw-6tgi">Analysis Neighborhoods - 2020 census tracts assigned to neighborhoods</a></u> <u><a href="https://data.sfgov.org/d/p2fw-hsrv">Census 2020: Blocks for San Francisco</a></u> <u><a href="https://data.sfgov.org/d/e2st-aufe">Census 2020: Blocks for San Francisco Clipped to SF Shoreline</a></u> <u><a href="https://data.sfgov.org/d/24e8-pd2q">Census 2020: Blocks Groups for San Francisco</a></u>
num_resources 4
num_tags 10
title Census 2020: Block Groups for San Francisco Clipped to the Shoreline