I just downloaded the current census response rates file for Illinois. My focus in Chicago. When I matched the response rate file to the latest ACS I did not get a match.
For example, ACS 2018 for Chicago has a tract 3201.00. The incoming response rate file has tracts 3201.01 and 3201.02.
The incoming response rate file has tracts 3301.01, 3301.02 and 3301.03; the 2018 ACS file includes 3301.00.
There are 8-9 similar mismatches, always with the response rate file having more new variants of the 2018 ACS tract structure.
Ouch! Did they do retracting of fairly settled cities for 2020? Looking around, I can find no info.
Huge implications.
To go back to the original question and the follow up from Bernie, new tracts were developed under the PSAP program earlier this year using housing unit counts derived from 2010 figures plus new construction…
Yes, the Census Bureau “Response Rates Map” is tabulated for the draft 2020 Tracts layer – the draft before Tracts were finalized thru the PSAP validation process.
Find that draft layer on TIGERweb: https://tigerweb.geo.census.gov/tigerweb/ It should be the version labeled "Current vintage"… which is confusing. They used that label to avoid calling it 2020 vintage, because it was draft 2020 and not final 2020.)
IF you want to compare response rates in 2020 vs ten years ago -- then read this from Steve Romalewski at CUNY: www.gc.cuny.edu/Page-Elements/Academics-Research-Centers-Initiatives/Centers-and-Institutes/Center-for-Urban-Research/CUR-research-initiatives/Census-2020-Self-Response-Data-Questions-and-Answers
because that’s a whole complicated puzzle.
--Todd Graham
Met Council Research