I want to use the census block group geometries and census tract geometries with pattern data.
According to this link(What is the year of the Census Block Group geographies?)
and safegraph docs (Open Census Data | SafeGraph Docs), I think the 2010-2019 Census Block Group geometries (300mb download, 1.8gb uncompressed) were based on Census 2016 Shapefile.
But my study shows that open census: Census Block Group geometries do not match any data with the census shapefile.
2010-2019 Census Block Group geometries have 220740 records,
2020-2029 geometries have 242335 records.
And I checked all the shapefiles from 2010 to 2020 downloaded from NHGIS:
None of them can match the data of safegrpah.
In addition, safegraph open census data:
2016, 2017, 2018, and 2019 have 220333 records, and 2020 has 242335.