Hello,
I am using the block group crosswalks to compare ACS 5yr estimates from 2013-2023. I am using the crosswalk files for 2010 Block Groups → 2020 Block Groups.
In the file for Connecticut, the geographies listed are for the areas used pre-2022 (changes listed at Changes to Counties and County Equivalent Entities: 1970-Present on the 2020 tab) and include FIP codes like 09001?. Do you have a file relating the 2010 Block groups for Connecticut to the new county-equivalent geographic unit/planning regions adopted in 2022? Or do you have a mapping between the old counties’ block groups to the new planning regions’ block groups?