This should be very simple and I am probably just missing it. I followed the summarize spatial data Tutorial located here: https://developers.arcgis.com/labs/arcgisonline/summarize-spatial-data/\ and I still can't figure this out. I have two layers, one shows every credit union in Florida and the other is the ESRI 2018 USA Population Density (See Screenshot 1). I want to get a total count of Credit Unions per Zipcode (and eventually population per credit union per Zipcode: Population/Number of Credit Unions). When I go to "Analysis>Summarize Data>Aggregate Points" and select my credit unions layer in the first drop down, I would expect (per the tutorial mentioned above) that I would then choose the 2018 USA Population Density layer in the "Choose the Polygon Layer" dropdown. But nothing appears (see Screenshot2). How do I select the zipcodes?
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