When I recently downloaded a custom data set drawing data from some 20 states, I discovered that all the records had a 1 for the state fip and 55 for the county fip. This was particularly surprising since all of the met2013 and PUMA fields were correct. Why would this occur?
I was able to download your most recent extract (extract 17) from IPUMS USA and I am not seeing the problem you describe. I see different values of STATEFIP and COUNTYFIP when I scroll down in the .csv file.
Let us know if you are referring to a different extract, or you can send the file to us at ipums@umn.edu.
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