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A statistician at the Office of Management and Budget directed me to this website: https://www.census.gov/geographies/reference-files/time-series/demo/metro-micro/delineation-files.html and the files under the Core based statistical areas (CBSAs), metropolitan divisions, and combined statistical areas (CSAs) heading contain the relevant information. This is ...


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ZCTAs are created every 10 years for the Decennial Census. They are not representative of current zip code boundaries. Zip codes are created for mail carriers to deliver the mail, not for data analysis. here is some really good information about ZCTAs from the Census Bureau: ZCTA Guidance This video also has some good information in it


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As Anthony mentioned, tract-level American Community Survey (ACS) data is only published as part of the 5-year series. The most recent data that's available at the tract level is from the 2014-2018 ACS. Tract-level estimates are not reliable enough to be published annually. There's also the decennial census, but the number of variables is more limited and ...


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The American Community Survey (ACS) began large-scale surveying starting in 2005, and began nationally-representative population surveying in 2007 (when it included group quarters populations). Prior to that, the ACS was inherited from the Decennial Census Long Form. Essentially, your data years would look something like this: 1990, 2000, 2007-2018. The ...


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