What measurement units are found exclusively in the us?

miles, pounds, ounces, cups

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To expand on this fine answer from previous contributor.... "Inches" (and fractions thereof) are used in virtually every US industry, making it number 1, followed by, as the previous contributor answered, "Ounces".

A notable exception is the far-enveloping field of Science, where the "Metric System" or more properly, the "ISU" is utilized, as international continuity is mandatory.

Ex:

Meteorology-distance (km), speed (kt), pressure (Mb), etc.

Pharmacology or Medicine (mg, gm, ml) Alcohol (ml)

The USA is the only "non-third world country" that does not exclusively use the ISU (metric system) for measurement. Again, an exception would be the UK, who are still in the process of phasing out their own "Imperial System" of measurement.

Not part of the answer, just my humble opinion, but....

I believe that U.S. school children should be taught the ISU along with current standards, as at some point within the next generation, I believe more and more fields and/or industries will be using the ISU. As it is based on standard base units and powers of 10, it should not be an issue of this adding additional Teacher workload or a perceived opinion that it would cause confusion, since children are being taught math in this manner starting as early as Kindergarten. I was at a loss as to why I was not taught it in school in High school in the 1980's, and am even more bewildered that my elementary school aged child hasn't been exposed to any measurable degree.