Zip code heatmap not showing counts/amounts correctly

[KM_MapsFan]

Hello,

I have a csv file, one column is zip code (string) and the 2nd column is count (integer). I am trying to create a heatmap by by the zip code boundary.

I uploaded my csv file as a hosted layer file.

I have upload my csv file as a table and created a join.

I would like it to look like the last picture.

[JenniferAcunto · Accepted solution]

From your screenshots, it looks like you are using point features. To get the map you want, you will need to use a polygon dataset containing zip code boundaries. 

Then select the Counts and Amounts (color) style. 

I used this zip code boundary layer: USA ZIP Code Areas 

The example map in your screenshot is actually a choropleth map. They are frequently referred to as a heatmaps, which can be confusing. Standard Co has a nice explainer on the differences: Heatmaps vs Choropleths

[KM_MapsFan]

Thank you!! That makes sense to use another layer, perfect!

Yes I read about the choroleths vs heatmap as well.