Sometimes the data is aggregated up in the view. Please see attached 2018.2 workbook. If you can't open it (if you're only on Tableau Public) let me know and I'll upload it to my Tableau Public site, where you can then download it. Below are the screenshots that I'm getting if I use your data as is:
There are some locations not found as a match between your data and Tableau's geobase; however, not so much of an issue as they're mostly international locations and your concern is with Minneapolis, MN.
This is probably the view that you're seeing:
By going to Analysis, then unchecking Aggregate Measures, you should then see all of the data points:
If this answers your question, please mark this response as correct and/or helpful if only helpful. Thx! Don
Book1.twbx 534.5 KB
Thank you for your prompt response. I am indeed on Tableau Public; if you could upload the workbook to your profile, that would be great.
I tried unchecking Aggregate Measures in the Analysis menu, but unfortunately, that doesn't seem to help - the points on the map for Minneapolis are still missing, and the ones for Saint Paul disappear when I save it to Tableau Public. Additionally, this somewhat defeats the purpose of the project, as I need the "SUM(Number of Records)" measure in order to color-code the map based on where alums are concentrated.
One thing I forgot to mention in my original post: on the "Heat Map by ZIP" tab, I do get some of the correct regions when I filter the data to just include records for which the city is Minneapolis... but only some of them, and the "cut-off" for which ones are or aren't included seems to be arbitrary.