ACS Data Users Group

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  • 1.  What is "PCI" in the ACS geography file?

    Posted 09-14-2023 04:59 PM

    Anyone know what the PCI flag in the ACS geography file stands for?

    It's either "Y" or blank. There are 524 lines in the new ACS (2022 1-year) geo file that have PCI = Y.

    I suspect it designates either principal cities of CBSAs, or geo components of states and larger areas that are within principal cities of CBSAs. Can anyone confirm this?



  • 2.  RE: What is "PCI" in the ACS geography file?

    Posted 09-14-2023 05:52 PM

    PCI = Metropolitan/Micropolitan Principal City Indicator

    This info, along with some other important summary file documentation, is in the (suboptimally out-of-the-way) "Notes on Data, Geography and Variable Changes" in the GitHub pages for the table-based summary files.



  • 3.  RE: What is "PCI" in the ACS geography file?

    Posted 09-14-2023 06:05 PM

    Thanks !