I am new to ESRI terminology. Most of my experience comes from using MapInfo. That might be why I can't figure out how to do something I expected would be easy. I have a spreadsheet with county level sales statistics. I want to display those statistics in ACRGIS Online as a thematic map. I see I can upload a CSV. However, the upload tool is looking for lat/long. For a file with county ID, I would think I could join to the boundary files ESRI already makes available. Can anyone point me in the right direction to get that done?
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