Strange thing regarding Map Chart

[wanyunyang]

Hi everyone,

I downloaded US.zip from GeoNames, and tried to create a map chart based on zip code. This is my script:

But the map shows like this:

Which doesn't make sense, because all dots should be in US. And many dots are not shown. Like in CA, there is a dot with zip code 90001.  It will be shown only with the filter:

Any ideas what the problem is?

[Digvijay_Singh]

‌Yes.