I'm trying to join the demographics from ACS 2015 data with Block Shape files from 2015 on BlockGroupID (Block Group FIPS code) and see some of Block groups are missing from ACS that are in Census Shape file. I'm wondering what is the reason behind this. I'm new to this kind of geographic data and the group itself. Would love to hear some expect options on how I can get complete information.
Attached google drive link contains the Block Groups ID (FIPS Codes) from ACS 2015 that did not match with Census Shape file 2015.
In reply to JamiRae:
In reply to Maribeth Todd:
In reply to Mohammed Ayub:
Virginia's 515 code is the old Bedford City - merged with Bedford County in 2014. There have been a number of tract and block group changes since the 2010 census that are reflected in the most recent ACS data. For example, changes in 2011 are described at: https://www.census.gov/programs-surveys/acs/technical-documentation/table-and-geography-changes/2011/geography-changes.html. There have been changes in Arizona, California, New York, and Virginia. This may explain some of your missing links.
In reply to David Stinchcomb: