Counting duplicates in Excel

Question

I have a list of postcodes that includes duplicates. I would like to find out how many instances of each postcode there are.

For example I would like this:

Answer 1

This can be done using pivot tables. See this youtube video for a walkthrough: Quickly Count Duplicates in Excel List With Pivot Table.

To count the number of times each item is duplicated in an Excel list, you can use a pivot table, instead of manually creating a list with formulas.